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Karl Richard Hansen

TitleProf & Chair
InstitutionUniversity of Oklahoma Health Sciences Center
DepartmentObstetrics and Gynecology
AddressAAT 2400
800 Stanton L Young Blvd
Oklahoma City OK 73104
Phone405/271-1616
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    Collapse Research 
    Collapse research activities and funding
    R01HD100305     (HANSEN, KARL RICHARD)Sep 26, 2019 - Aug 31, 2024
    NIH
    2/3 A randomized controlled trial of frozen embryo transfers performed in modified natural versus programmed cycles (NatPro)
    Role: Principal Investigator
    U10HD077680     (HANSEN, KARL RICHARD)Sep 24, 2013 - Jun 30, 2019
    NIH
    Luteal Progesterone Supplementation in Clomiphene Citrate-IUI Cycles
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
    Newest   |   Oldest   |   Most Cited   |   Most Discussed   |   Timeline   |   Field Summary   |   Plain Text
    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Evans MB, Hosseinzadeh P, Flannagan K, Jahandideh S, Burruss E, Peck JD, Hansen KR, Hill M, Devine K. Assessment of Clinical Pregnancies in Up to Eight Ovarian Stimulation with Intrauterine Insemination Cycles in Those Unable to Proceed With In Vitro Fertilization. Fertil Steril. 2024 Feb 14. PMID: 38365110.
      Citations:    Fields:    
    2. Ulker A, Hansen KR. High antim?llerian hormone level in oocyte donors: is it a problem? Fertil Steril. 2023 Nov 30. PMID: 38042395.
      Citations:    Fields:    Translation:HumansCells
    3. Hosseinzadeh P, Peck JD, Burks HR, Souter I, Xing A, Craig LB, Diamond MP, Hansen KR. Follicular phase length is not related to live birth outcome in women with unexplained infertility undergoing ovarian stimulation with intrauterine insemination cycles in a multicenter trial. F S Rep. 2023 Dec; 4(4):361-366. PMID: 38204957; PMCID: PMC10774873.
      Citations:    
    4. Vitek WS, Sun F, Cardozo E, Hoeger KM, Hansen KR, Santoro N, Zhang H, Legro RS. Moderate and increased physical activity is not detrimental to live birth rates among women with unexplained infertility and obesity. F S Rep. 2023 Sep; 4(3):308-312. PMID: 37719091; PMCID: PMC10504528.
      Citations:    
    5. Craig LB, Jarshaw CL, Hansen KR, Peck JD. Association between obesity and fecundity in patients undergoing intrauterine insemination. F S Rep. 2023 Sep; 4(3):270-278. PMID: 37719104; PMCID: PMC10504554.
      Citations:    
    6. Hosseinzadeh P, Wild RA, Hansen KR. Diminished ovarian reserve: risk for preeclampsia in in?vitro fertilization pregnancies. Fertil Steril. 2023 Mar 08. PMID: 36898425.
      Citations:    Fields:    Translation:Humans
    7. Wild RA, Edwards RK, Zhao D, Hansen KR, Kim AS, Wrenn DS. Highly Atherogenic Lipid Particles are Associated with Preeclampsia After Successful Fertility Treatment for Obese Women who have Unexplained Infertility. Reprod Sci. 2023 Feb 22. PMID: 36813973.
      Citations:    Fields:    Translation:Humans
    8. Gavrizi SZ, Hosseinzadeh P, Brush RS, Tytanic M, Eckart E, Peck JD, Craig LB, Diamond MP, Agbaga MP, Hansen KR. Sperm very long-chain polyunsaturated fatty acids: relation to semen parameters and live birth outcome in a multicenter trial. Fertil Steril. 2023 Jan 19. PMID: 36681262.
      Citations:    Fields:    Translation:HumansCells
    9. Wild RA, Edwards RK, Zhao D, Kim AS, Hansen KR. Immediate weight loss before ovarian stimulation with intrauterine insemination is associated with a lower risk of preeclampsia in women with obesity and unexplained infertility. F S Rep. 2022 Sep; 3(3):264-268. PMID: 36212561; PMCID: PMC9532870.
      Citations:    
    10. Wild RA, Weedin E, Cox K, Zhao YD, Wrenn DS, Lopez D, Wooten CJ, Melendez QM, Myers D, Hansen KR. Proprotein Convertase Subtilisin Kexin 9 (PCSK9) and nonHDL particles rise during normal pregnancy and differ by BMI. J Clin Lipidol. 2022 Jul-Aug; 16(4):483-490. PMID: 35717446.
      Citations:    Fields:    Translation:Humans
    11. Baker KC, Steiner AZ, Hansen KR, Barnhart KT, Cedars MI, Legro RS, Diamond MP, Krawetz SA, Usadi R, Baker VL, Coward RM, Sun F, Wild R, Masson P, Smith JF, Santoro N, Zhang H. Poor reproducibility of percentage of normally shaped sperm using the World Health Organization Fifth Edition strict grading criteria. F S Rep. 2022 Jun; 3(2):110-115. PMID: 35789726.
      Citations: 3     
    12. Spitzer TL, Trussell JC, Coward RM, Hansen KR, Barnhart KT, Cedars MI, Diamond MP, Krawetz SA, Sun F, Zhang H, Santoro N, Steiner AZ. Biomarkers of Stress and Male Fertility. Reprod Sci. 2022 04; 29(4):1262-1270. PMID: 35106743.
      Citations:    Fields:    Translation:HumansCells
    13. Souter I, Sun F, Zhang H, Diamond MP, Legro RS, Wild RA, Hansen KR, Santoro N. A personalized medicine approach to ovulation induction/ovarian stimulation: development of a predictive model and online calculator from level-I evidence. Fertil Steril. 2022 02; 117(2):408-418. PMID: 35125179.
      Citations: 1     Fields:    Translation:Humans
    14. Hosseinzadeh P, Hansen KR. Endometrial scratch to improve outcomes of expectant management in patients with unexplained infertility? Fertil Steril. 2022 03; 117(3):620-621. PMID: 35105442.
      Citations:    Fields:    Translation:Humans
    15. Legro RS, Hansen KR, Diamond MP, Steiner AZ, Coutifaris C, Cedars MI, Hoeger KM, Usadi R, Johnstone EB, Haisenleder DJ, Wild RA, Barnhart KT, Mersereau J, Trussell JC, Krawetz SA, Kris-Etherton PM, Sarwer DB, Santoro N, Eisenberg E, Huang H, Zhang H. Effects of preconception lifestyle intervention in infertile women with obesity: The FIT-PLESE randomized controlled trial. PLoS Med. 2022 01; 19(1):e1003883. PMID: 35041662.
      Citations: 13     Fields:    Translation:Humans
    16. Gavrizi SZ, Arya S, Peck JD, Knudtson JF, Diamond MP, Wild RA, Hansen KR. High-sensitivity C-reactive protein levels and pregnancy outcomes in women with unexplained infertility after ovarian stimulation with intrauterine insemination in a multicenter trial. F S Rep. 2022 Mar; 3(1):57-62. PMID: 35386508.
      Citations: 2     
    17. Barnhart KT, Steiner AZ, Hansen KR. Active vs Expectant Management of Persisting Pregnancy of Unknown Location-Reply. JAMA. 2021 12 14; 326(22):2330. PMID: 34905034.
      Citations:    Fields:    Translation:Humans
    18. Eisenberg E, Legro RS, Diamond MP, Huang H, O'Brien LM, Smith YR, Coutifaris C, Hansen KR, Santoro N, Zhang H. Sleep Habits of Women With Infertility. J Clin Endocrinol Metab. 2021 10 21; 106(11):e4414-e4426. PMID: 34180998.
      Citations: 10     Fields:    Translation:Humans
    19. Baksh S, Casper A, Christianson MS, Devine K, Doody KJ, Ehrhardt S, Hansen KR, Lathi RB, Timbo F, Usadi R, Vitek W, Shade DM, Segars J, Baker VL. Natural vs. programmed cycles for frozen embryo transfer: study protocol for an investigator-initiated, randomized, controlled, multicenter clinical trial. Trials. 2021 Sep 27; 22(1):660. PMID: 34579768.
      Citations: 1     Fields:    Translation:HumansCTClinical Trials
    20. Knudtson JF, Sun F, Coward RM, Hansen KR, Barnhart KT, Smith J, Legro RS, Diamond MP, Krawetz SA, Zhang H, Usadi R, Baker VL, Santoro N, Steiner AZ. The relationship of plasma antioxidant levels to semen parameters: the Males, Antioxidants, and Infertility (MOXI) randomized clinical trial. J Assist Reprod Genet. 2021 Nov; 38(11):3005-3013. PMID: 34455507.
      Citations: 6     Fields:    Translation:Humans
    21. Craig LB, Arya S, Burks HR, Warta K, Jarshaw C, Hansen KR, Peck JD. Relationship between semen regurgitation and pregnancy rates with intrauterine insemination. Fertil Steril. 2021 12; 116(6):1526-1531. PMID: 34417056.
      Citations: 1     Fields:    Translation:Humans
    22. Barnhart KT, Hansen KR, Stephenson MD, Usadi R, Steiner AZ, Cedars MI, Jungheim ES, Hoeger KM, Krawetz SA, Mills B, Alston M, Coutifaris C, Senapati S, Sonalkar S, Diamond MP, Wild RA, Rosen M, Sammel MD, Santoro N, Eisenberg E, Huang H, Zhang H. Effect of an Active vs Expectant Management Strategy on Successful Resolution of Pregnancy Among Patients With a Persisting Pregnancy of Unknown Location: The ACT or NOT Randomized Clinical Trial. JAMA. 2021 08 03; 326(5):390-400. PMID: 34342619.
      Citations: 4     Fields:    Translation:Humans
    23. Rios JS, Coward RM, Hansen KR, Barnhart KT, Cedars MI, Legro RS, Diamond MP, Krawetz SA, Usadi R, Baker VL, Sun F, Wild R, Smith JF, Santoro N, Zhang H, Steiner AZ. Sperm deoxyribonucleic acid fragmentation: predictors, fertility outcomes, and assays among infertile males. F S Rep. 2021 Sep; 2(3):282-288. PMID: 34553152.
      Citations: 1     
    24. Arya S, Hansen KR, Peck JD, Wild RA. Metabolic syndrome in obesity: treatment success and adverse pregnancy outcomes with ovulation induction in polycystic ovary syndrome. Am J Obstet Gynecol. 2021 09; 225(3):280.e1-280.e11. PMID: 33852887.
      Citations: 6     Fields:    Translation:Humans
    25. Quaas AM, Gavrizi SZ, Peck JD, Diamond MP, Legro RS, Robinson RD, Casson P, Christman GM, Zhang H, Hansen KR. Endometrial thickness after ovarian stimulation with gonadotropin, clomiphene, or letrozole for unexplained infertility, and association with treatment outcomes. Fertil Steril. 2021 01; 115(1):213-220. PMID: 32972733.
      Citations: 11     Fields:    Translation:Humans
    26. Burks HR, Hansen KR. Oil or water-based contrast for hysterosalpingography? Fertil Steril. 2020 07; 114(1):75-76. PMID: 32532493.
      Citations: 3     Fields:    Translation:Humans
    27. Hansen KR, Peck JD, Coward RM, Wild RA, Trussell JC, Krawetz SA, Diamond MP, Legro RS, Coutifaris C, Alvero R, Robinson RD, Casson P, Christman GM, Santoro N, Zhang H. Intrauterine insemination performance characteristics and post-processing total motile sperm count in relation to live birth for couples with unexplained infertility in a randomised, multicentre clinical trial. Hum Reprod. 2020 06 01; 35(6):1296-1305. PMID: 32432326.
      Citations: 7     Fields:    Translation:HumansCells
    28. Legro RS, Diamond MP, Coutifaris C, Schlaff WD, Alvero R, Casson P, Christman GM, Rosen RM, Cedars MI, Hansen KR, Robinson R, Baker V, Usadi R, Dodson WC, Estes SJ, Kunselman A, Stetter C, Barnhart KT, Coward RM, Trussell JC, Krawetz SA, Santoro N, Huang H, Zhang H, Eisenberg E. Pregnancy registry: three-year follow-up of children conceived from letrozole, clomiphene, or gonadotropins. Fertil Steril. 2020 05; 113(5):1005-1013. PMID: 32386612.
      Citations: 3     Fields:    Translation:Humans
    29. Miller V, Diamond MP, Hansen KR, Steiner AZ, Cedars M, Legro RS, Krawetz SA, Coutifaris C, Huang H, Santoro N, Zhang H. Families with children resulting from ART: psychosocial and financial implications. Hum Reprod Open. 2020; 2020(2):hoaa010. PMID: 32309638.
      Citations: 1     
    30. Wang ET, Diamond MP, Alvero R, Casson P, Christman GM, Coutifaris C, Hansen KR, Sun F, Legro RS, Robinson RD, Usadi RS, Pisarska MD, Santoro NF, Zhang H. Androgenicity and fertility treatment in women with unexplained infertility. Fertil Steril. 2020 03; 113(3):636-641. PMID: 32192596.
      Citations: 2     Fields:    Translation:Humans
    31. Steiner AZ, Hansen KR, Barnhart KT, Cedars MI, Legro RS, Diamond MP, Krawetz SA, Usadi R, Baker VL, Coward RM, Huang H, Wild R, Masson P, Smith JF, Santoro N, Eisenberg E, Zhang H. The effect of antioxidants on male factor infertility: the Males, Antioxidants, and Infertility (MOXI) randomized clinical trial. Fertil Steril. 2020 03; 113(3):552-560.e3. PMID: 32111479.
      Citations: 64     Fields:    Translation:Humans
    32. Hansen KR. Gonadotropins with intrauterine insemination for unexplained infertility-time to stop? Fertil Steril. 2020 02; 113(2):333-334. PMID: 32106982.
      Citations: 2     Fields:    Translation:Humans
    33. Arya S, Hansen KR, Wild RA. Metformin, rosiglitazone, or both for obese women with polycystic ovary syndrome? Fertil Steril. 2020 01; 113(1):87-88. PMID: 32033735.
      Citations: 3     Fields:    Translation:Humans
    34. Winship AL, Willson C, Hansen KR, Hutt KJ, Hickey M. Do BRCA1 and BRCA2 gene mutation carriers have a reduced ovarian reserve? Protocol for a prospective observational study. BMJ Open. 2019 11 25; 9(11):e033810. PMID: 31772111.
      Citations: 3     Fields:    Translation:Humans
    35. Swanson GM, Estill M, Diamond MP, Legro RS, Coutifaris C, Barnhart KT, Huang H, Hansen KR, Trussell JC, Coward RM, Zhang H, Goodrich R, Krawetz SA. Human chromatin remodeler cofactor, RNA interactor, eraser and writer sperm RNAs responding to obesity. Epigenetics. 2020 Jan - Feb; 15(1-2):32-46. PMID: 31354029.
      Citations: 8     Fields:    Translation:HumansCells
    36. Coward RM, Stetter C, Kunselman A, Trussell JC, Lindgren MC, Alvero RR, Casson P, Christman GM, Coutifaris C, Diamond MP, Hansen KR, Krawetz SA, Legro RS, Robinson RD, Smith JF, Steiner AZ, Wild RA, Zhang H, Santoro N. Fertility Related Quality of Life, Gonadal Function and Erectile Dysfunction in Male Partners of Couples with Unexplained Infertility. J Urol. 2019 08; 202(2):379-384. PMID: 30835629.
      Citations: 10     Fields:    Translation:Humans
    37. Trussell JC, Coward RM, Santoro N, Stetter C, Kunselman A, Diamond MP, Hansen KR, Krawetz SA, Legro RS, Heisenleder D, Smith J, Steiner A, Wild R, Casson P, Coutifaris C, Alvero RR, Robinson RB, Christman G, Patrizio P, Zhang H, Lindgren MC. Association between testosterone, semen parameters, and live birth in men with unexplained infertility in an intrauterine insemination population. Fertil Steril. 2019 06; 111(6):1129-1134. PMID: 30982604.
      Citations: 10     Fields:    Translation:HumansCells
    38. Huang H, Kuang H, Sun F, Diamond MP, Legro RS, Coutifaris C, Alvero R, Robinson RD, Casson PR, Christman GM, Hansen KR, Santoro N, Eisenberg E, Zhang H. Lower prevalence of non-cavity-distorting uterine fibroids in patients with polycystic ovary syndrome than in those with unexplained infertility. Fertil Steril. 2019 05; 111(5):1011-1019.e1. PMID: 30926125.
      Citations: 3     Fields:    Translation:Humans
    39. Weedin E, Kort J, Quaas A, Baker V, Wild R, Hansen K. Luteal-phase progesterone supplementation in non-IVF treatment: a survey of physicians providing infertility treatment. Hum Fertil (Camb). 2020 Dec; 23(4):239-245. PMID: 30628506.
      Citations:    Fields:    Translation:Humans
    40. Kent J, Dodson WC, Kunselman A, Pauli J, Stone A, Diamond MP, Coutifaris C, Schlaff WD, Alvero R, Casson P, Christman GM, Rosen RM, Hansen KR, Robinson RD, Baker V, Usadi R, Santoro N, Zhang H, Eisenberg E, Legro RS. Gestational Weight Gain in Women With Polycystic Ovary Syndrome: A Controlled Study. J Clin Endocrinol Metab. 2018 11 01; 103(11):4315-4323. PMID: 30085187.
      Citations: 9     Fields:    Translation:Humans
    41. Diamond MP, Eisenberg E, Huang H, Coutifaris C, Legro RS, Hansen KR, Steiner AZ, Cedars M, Barnhart K, Ziolek T, Thomas TR, Maurer K, Krawetz SA, Wild RA, Trussell JC, Santoro N, Zhang H. The efficiency of single institutional review board review in National Institute of Child Health and Human Development Cooperative Reproductive Medicine Network-initiated clinical trials. Clin Trials. 2019 02; 16(1):3-10. PMID: 30354458.
      Citations: 7     Fields:    Translation:Humans
    42. Barnhart KT, Sammel MD, Stephenson M, Robins J, Hansen KR, Youssef WA, Santoro N, Eisenberg E, Zhang H. Optimal treatment for women with a persisting pregnancy of unknown location, a randomized controlled trial: The ACT-or-NOT trial. Contemp Clin Trials. 2018 10; 73:145-151. PMID: 30243810.
      Citations: 3     Fields:    Translation:HumansCTClinical Trials
    43. Christianson MS, Legro RS, Jin S, Eisenberg E, Diamond MP, Hansen KR, Vitek W, Styer AK, Casson P, Coutifaris C, Christman GM, Alvero R, Puscheck EE, Christy AY, Sun F, Zhang H, Polotsky AJ, Santoro N. Comparison of sonohysterography to hysterosalpingogram for tubal patency assessment in a multicenter fertility treatment trial among women with polycystic ovary syndrome. J Assist Reprod Genet. 2018 Dec; 35(12):2173-2180. PMID: 30194618.
      Citations: 2     Fields:    Translation:Humans
    44. Hansen KR, Eisenberg E, Baker V, Hill MJ, Chen S, Talken S, Diamond MP, Legro RS, Coutifaris C, Alvero R, Robinson RD, Casson P, Christman GM, Santoro N, Zhang H, Wild RA. Midluteal Progesterone: A Marker of Treatment Outcomes in Couples With Unexplained Infertility. J Clin Endocrinol Metab. 2018 07 01; 103(7):2743-2751. PMID: 29767754.
      Citations: 10     Fields:    Translation:Humans
    45. Evans-Hoeker EA, Eisenberg E, Diamond MP, Legro RS, Alvero R, Coutifaris C, Casson PR, Christman GM, Hansen KR, Zhang H, Santoro N, Steiner AZ. Major depression, antidepressant use, and male and female fertility. Fertil Steril. 2018 05; 109(5):879-887. PMID: 29778387.
      Citations: 29     Fields:    Translation:Humans
    46. Davis EM, Peck JD, Hansen KR, Neas BR, Craig LB. Associations between vitamin D levels and polycystic ovary syndrome phenotypes. Minerva Endocrinol. 2019 Jun; 44(2):176-184. PMID: 29652114.
      Citations: 11     Fields:    Translation:Humans
    47. Craig LB, Weedin EA, Walker WD, Janitz AE, Hansen KR, Peck JD. Racial and Ethnic Differences in Pregnancy Rates Following Intrauterine Insemination with a Focus on American Indians. J Racial Ethn Health Disparities. 2018 10; 5(5):1077-1083. PMID: 29318510.
      Citations: 4     Fields:    Translation:Humans
    48. Seungdamrong A, Steiner AZ, Gracia CR, Legro RS, Diamond MP, Coutifaris C, Schlaff WD, Casson P, Christman GM, Robinson RD, Huang H, Alvero R, Hansen KR, Jin S, Eisenberg E, Zhang H, Santoro N. Preconceptional antithyroid peroxidase antibodies, but not thyroid-stimulating hormone, are associated with decreased live birth rates in infertile women. Fertil Steril. 2017 Oct 25. PMID: 29102040.
      Citations: 20     Fields:    
    49. Diamond MP, Legro RS, Coutifaris C, Alvero R, Robinson RD, Casson PA, Christman GM, Huang H, Hansen KR, Baker V, Usadi R, Seungdamrong A, Bates GW, Rosen RM, Schlaff W, Haisenleder D, Krawetz SA, Barnhart K, Trussell JC, Santoro N, Eisenberg E, Zhang H. Sexual function in infertile women with polycystic ovary syndrome and unexplained infertility. Am J Obstet Gynecol. 2017 08; 217(2):191.e1-191.e19. PMID: 28455078.
      Citations: 12     Fields:    Translation:Humans
    50. Engmann L, Jin S, Sun F, Legro RS, Polotsky AJ, Hansen KR, Coutifaris C, Diamond MP, Eisenberg E, Zhang H, Santoro N. Racial and ethnic differences in the polycystic ovary syndrome metabolic phenotype. Am J Obstet Gynecol. 2017 05; 216(5):493.e1-493.e13. PMID: 28104402.
      Citations: 33     Fields:    Translation:Humans
    51. Quaas AM, Hansen KR. The role of steroid hormone supplementation in non-assisted reproductive technology treatments for unexplained infertility. Fertil Steril. 2016 Dec; 106(7):1600-1607. PMID: 27793379.
      Citations: 1     Fields:    Translation:Humans
    52. Quaas AM, Hansen KR. Time to "cool off"? Examining indications for "elective deferred frozen embryo transfer". J Assist Reprod Genet. 2016 Dec; 33(12):1551-1552. PMID: 27722935.
      Citations: 3     Fields:    Translation:Humans
    53. Hansen KR, He AL, Styer AK, Wild RA, Butts S, Engmann L, Diamond MP, Legro RS, Coutifaris C, Alvero R, Robinson RD, Casson P, Christman GM, Huang H, Santoro N, Eisenberg E, Zhang H. Predictors of pregnancy and live-birth in couples with unexplained infertility after ovarian stimulation-intrauterine insemination. Fertil Steril. 2016 Jun; 105(6):1575-1583.e2. PMID: 26949110.
      Citations: 41     Fields:    Translation:Humans
    54. Peck JD, Quaas AM, Craig LB, Soules MR, Klein NA, Hansen KR. Lifestyle factors associated with histologically derived human ovarian non-growing follicle count in reproductive age women. Hum Reprod. 2016 Jan; 31(1):150-7. PMID: 26497957.
      Citations: 10     Fields:    Translation:Humans
    55. Steiner AZ, Diamond MP, Legro RS, Schlaff WD, Barnhart KT, Casson PR, Christman GM, Alvero R, Hansen KR, Geisler WM, Thomas T, Santoro N, Zhang H, Eisenberg E. Chlamydia trachomatis immunoglobulin G3 seropositivity is a predictor of reproductive outcomes in infertile women with patent fallopian tubes. Fertil Steril. 2015 Dec; 104(6):1522-6. PMID: 26413816.
      Citations: 19     Fields:    Translation:HumansCells
    56. Diamond MP, Legro RS, Coutifaris C, Alvero R, Robinson RD, Casson P, Christman GM, Ager J, Huang H, Hansen KR, Baker V, Usadi R, Seungdamrong A, Bates GW, Rosen RM, Haisenleder D, Krawetz SA, Barnhart K, Trussell JC, Ohl D, Jin Y, Santoro N, Eisenberg E, Zhang H. Letrozole, Gonadotropin, or Clomiphene for Unexplained Infertility. N Engl J Med. 2015 Sep 24; 373(13):1230-40. PMID: 26398071.
      Citations: 97     Fields:    Translation:Humans
    57. Usadi RS, Diamond MP, Legro RS, Schlaff WD, Hansen KR, Casson P, Christman G, Wright Bates G, Baker V, Seungdamrong A, Rosen MP, Lucidi S, Thomas T, Huang H, Santoro N, Eisenberg E, Zhang H, Alvero R. Recruitment strategies in two reproductive medicine network infertility trials. Contemp Clin Trials. 2015 Nov; 45(Pt B):196-200. PMID: 26386293.
      Citations: 6     Fields:    Translation:Humans
    58. Kuang H, Jin S, Thomas T, Engmann L, Hansen KR, Coutifaris C, Casson P, Christman G, Alvero R, Santoro N, Eisenberg E, Diamond MP, Legro RS, Zhang H. Predictors of participant retention in infertility treatment trials. Fertil Steril. 2015 Nov; 104(5):1236-43.e1-2. PMID: 26354094.
      Citations: 4     Fields:    Translation:Humans
    59. Kuang H, Jin S, Hansen KR, Diamond MP, Coutifaris C, Casson P, Christman G, Alvero R, Huang H, Bates GW, Usadi R, Lucidi S, Baker V, Santoro N, Eisenberg E, Legro RS, Zhang H. Identification and replication of prediction models for ovulation, pregnancy and live birth in infertile women with polycystic ovary syndrome. Hum Reprod. 2015 Sep; 30(9):2222-33. PMID: 26202922.
      Citations: 9     Fields:    Translation:Humans
    60. Diamond MP, Legro RS, Coutifaris C, Alvero R, Robinson RD, Casson P, Christman GM, Ager J, Huang H, Hansen KR, Baker V, Usadi R, Seungdamrong A, Bates GW, Rosen RM, Haisonleder D, Krawetz SA, Barnhart K, Trussell JC, Jin Y, Santoro N, Eisenberg E, Zhang H. Assessment of multiple intrauterine gestations from ovarian stimulation (AMIGOS) trial: baseline characteristics. Fertil Steril. 2015 Apr; 103(4):962-973.e4. PMID: 25707331.
      Citations: 23     Fields:    Translation:Humans
    61. Quaas AM, Weedin EA, Hansen KR. On-label and off-label drug use in the treatment of endometriosis. Fertil Steril. 2015 Mar; 103(3):612-25. PMID: 25637479.
      Citations: 10     Fields:    Translation:Humans
    62. Zavy MT, Craig LB, Wild RA, Kahn SN, O'Leary D, Hansen KR. In high responding patients undergoing an initial IVF cycle, elevated estradiol on the day of hCG has no effect on live birth rate. Reprod Biol Endocrinol. 2014 Nov 28; 12:119. PMID: 25430541.
      Citations: 10     Fields:    Translation:Humans
    63. Knowlton NS, Craig LB, Zavy MT, Hansen KR. Validation of the power model of ovarian nongrowing follicle depletion associated with aging in women. Fertil Steril. 2014 Mar; 101(3):851-6. PMID: 24424370.
      Citations: 8     Fields:    Translation:Humans
    64. Hansen KR. Predicting reproductive age with biomarkers of ovarian reserve--how (and what) are we measuring? Semin Reprod Med. 2013 Nov; 31(6):416-26. PMID: 24101222.
      Citations: 7     Fields:    Translation:HumansAnimals
    65. Khan S, Mannel L, Koopman CL, Chimpiri R, Hansen KR, Craig LB. The use of MRI in the pre-surgical evaluation of patients with androgen insensitivity syndrome. J Pediatr Adolesc Gynecol. 2014 Feb; 27(1):e17-20. PMID: 24001432.
      Citations: 1     Fields:    Translation:Humans
    66. Hansen KR, Craig LB, Zavy MT, Klein NA, Soules MR. Ovarian primordial and nongrowing follicle counts according to the Stages of Reproductive Aging Workshop (STRAW) staging system. Menopause. 2012 Feb; 19(2):164-71. PMID: 22189385.
      Citations: 13     Fields:    Translation:Humans
    67. Huang H, Hansen KR, Factor-Litvak P, Carson SA, Guzick DS, Santoro N, Diamond MP, Eisenberg E, Zhang H. Predictors of pregnancy and live birth after insemination in couples with unexplained or male-factor infertility. Fertil Steril. 2012 Apr; 97(4):959-67. PMID: 22270557.
      Citations: 7     Fields:    Translation:Humans
    68. Hansen KR, Hodnett GM, Knowlton N, Craig LB. Correlation of ovarian reserve tests with histologically determined primordial follicle number. Fertil Steril. 2011 Jan; 95(1):170-5. PMID: 20522327.
      Citations: 151     Fields:    Translation:HumansCTClinical Trials
    69. Hansen KR, Soules MR. Counting ovarian follicles is not without its challenges. Fertil Steril. 2008 Apr; 89(4):1028-9; author reply 1029. PMID: 18325502.
      Citations: 1     Fields:    Translation:Humans
    70. Hansen KR, Knowlton NS, Thyer AC, Charleston JS, Soules MR, Klein NA. A new model of reproductive aging: the decline in ovarian non-growing follicle number from birth to menopause. Hum Reprod. 2008 Mar; 23(3):699-708. PMID: 18192670.
      Citations: 153     Fields:    Translation:Humans
    71. Charleston JS, Hansen KR, Thyer AC, Charleston LB, Gougeon A, Siebert JR, Soules MR, Klein NA. Estimating human ovarian non-growing follicle number: the application of modern stereology techniques to an old problem. Hum Reprod. 2007 Aug; 22(8):2103-10. PMID: 17548367.
      Citations: 21     Fields:    Translation:Humans
    72. Califano JA, Confer SD, Galati V, Oguejiofor I, Manatt CS, Hansen KR, Culkin DJ. Hydronephrosis in a woman undergoing in vitro fertilization. Urology. 2007 Feb; 69(2):384.e19-20. PMID: 17320689.
      Citations: 2     Fields:    Translation:Humans
    73. Hansen KR, Thyer AC, Sluss PM, Bremner WJ, Soules MR, Klein NA. Reproductive ageing and ovarian function: is the early follicular phase FSH rise necessary to maintain adequate secretory function in older ovulatory women? Hum Reprod. 2005 Jan; 20(1):89-95. PMID: 15550499.
      Citations: 7     Fields:    Translation:Humans
    74. Klein NA, Houmard BS, Hansen KR, Woodruff TK, Sluss PM, Bremner WJ, Soules MR. Age-related analysis of inhibin A, inhibin B, and activin a relative to the intercycle monotropic follicle-stimulating hormone rise in normal ovulatory women. J Clin Endocrinol Metab. 2004 Jun; 89(6):2977-81. PMID: 15181087.
      Citations: 21     Fields:    Translation:Humans
    75. Hansen KR, Morris JL, Thyer AC, Soules MR. Reproductive aging and variability in the ovarian antral follicle count: application in the clinical setting. Fertil Steril. 2003 Sep; 80(3):577-83. PMID: 12969701.
      Citations: 15     Fields:    Translation:HumansCells
    76. Hansen KR, Krasnow SM, Nolan MA, Fraley GS, Baumgartner JW, Clifton DK, Steiner RA. Activation of the sympathetic nervous system by galanin-like peptide--a possible link between leptin and metabolism. Endocrinology. 2003 Nov; 144(11):4709-17. PMID: 12960003.
      Citations: 14     Fields:    Translation:Animals
    77. Synnestvedt K, Furuta GT, Comerford KM, Louis N, Karhausen J, Eltzschig HK, Hansen KR, Thompson LF, Colgan SP. Ecto-5'-nucleotidase (CD73) regulation by hypoxia-inducible factor-1 mediates permeability changes in intestinal epithelia. J Clin Invest. 2002 Oct; 110(7):993-1002. PMID: 12370277.
      Citations: 341     Fields:    Translation:HumansCells
    78. Hansen KR, Resta R, Webb CF, Thompson LF. Isolation and characterization of the promoter of the human 5'-nucleotidase (CD73)-encoding gene. Gene. 1995 Dec 29; 167(1-2):307-12. PMID: 8566797.
      Citations: 14     Fields:    Translation:HumansCells
    79. Puffinbarger NK, Hansen KR, Resta R, Laurent AB, Knudsen TB, Madara JL, Thompson LF. Production and characterization of multiple antigenic peptide antibodies to the adenosine A2b receptor. Mol Pharmacol. 1995 Jun; 47(6):1126-32. PMID: 7603451.
      Citations: 10     Fields:    Translation:HumansAnimalsCells
    80. Hansen KR, Resta R, Webb CF, Thompson LF. Ecto-5'-nucleotidase (CD73): genomic cloning and characterization of regions upstream of the translation start site. Adv Exp Med Biol. 1994; 370:689-92. PMID: 7660997.
      Citations:    Fields:    Translation:HumansCells
    81. Resta R, Hooker SW, Hansen KR, Laurent AB, Park JL, Blackburn MR, Knudsen TB, Thompson LF. Murine ecto-5'-nucleotidase (CD73): cDNA cloning and tissue distribution. Gene. 1993 Nov 15; 133(2):171-7. PMID: 8224905.
      Citations: 11     Fields:    Translation:HumansAnimalsCells
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