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Karl Hansen

Concepts (312)

Concepts are derived automatically from a person's publications.
Concepts are listed by decreasing relevance which is based on many factors, including how many publications the person wrote about that topic, how long ago those publications were written, and how many publications other people have written on that same topic.


Name Number of Publications Most Recent Publication Publications by All Authors Concept Score Why?
Infertility, Female
19
2022
43
3.840
Why?
Infertility
10
2022
35
3.570
Why?
Ovulation Induction
14
2022
34
2.910
Why?
Ovarian Follicle
10
2019
84
2.490
Why?
Live Birth
14
2021
40
2.370
Why?
Insemination, Artificial
9
2025
27
1.760
Why?
Polycystic Ovary Syndrome
14
2022
65
1.660
Why?
Pregnancy
33
2025
1255
1.550
Why?
Infertility, Male
8
2022
23
1.530
Why?
Pregnancy Rate
17
2025
49
1.230
Why?
Watchful Waiting
4
2022
18
1.230
Why?
Aging
11
2019
1017
1.210
Why?
Female
59
2025
15634
1.200
Why?
Fertility
8
2022
60
1.180
Why?
Fertility Agents, Female
8
2022
15
1.170
Why?
Luteal Phase
2
2019
7
1.170
Why?
Progesterone
3
2019
130
1.110
Why?
Pregnancy, Ectopic
4
2021
11
1.080
Why?
Abortifacient Agents, Nonsteroidal
3
2021
5
1.050
Why?
Reproduction
4
2012
64
1.040
Why?
Humans
67
2025
28884
0.940
Why?
Adult
44
2025
8030
0.900
Why?
Ovary
3
2013
72
0.890
Why?
Reproductive Techniques, Assisted
5
2021
17
0.870
Why?
Hysterosalpingography
2
2020
4
0.800
Why?
Embryo Transfer
3
2021
13
0.790
Why?
Fertilization in Vitro
6
2021
24
0.770
Why?
Proprotein Convertases
1
2022
12
0.750
Why?
Models, Biological
3
2014
469
0.740
Why?
Prospective Studies
14
2022
1280
0.740
Why?
Insulin Resistance
3
2022
176
0.730
Why?
Life Style
3
2022
91
0.720
Why?
Progestins
2
2019
12
0.710
Why?
Cryopreservation
2
2021
13
0.680
Why?
Ovarian Reserve
2
2019
9
0.630
Why?
Ultrasonography
6
2018
243
0.630
Why?
Gonadotropins
5
2020
22
0.600
Why?
Spermatozoa
4
2025
34
0.580
Why?
Biomarkers
8
2022
777
0.570
Why?
Estradiol
4
2014
176
0.570
Why?
Chorionic Gonadotropin
3
2021
22
0.530
Why?
Gonadal Steroid Hormones
1
2016
24
0.500
Why?
Pregnancy Outcome
6
2021
131
0.500
Why?
Obesity
6
2022
701
0.490
Why?
Clomiphene
5
2021
11
0.480
Why?
Sperm Count
4
2025
17
0.470
Why?
Premenopause
1
2015
20
0.470
Why?
Off-Label Use
1
2015
6
0.450
Why?
Drug Labeling
1
2015
4
0.450
Why?
Endometriosis
1
2015
19
0.450
Why?
Birth Rate
1
2014
11
0.450
Why?
Drug Prescriptions
1
2015
46
0.440
Why?
Follicle Stimulating Hormone
4
2012
71
0.440
Why?
Ovariectomy
2
2012
53
0.410
Why?
Primary Ovarian Insufficiency
1
2013
6
0.410
Why?
Semen
3
2022
29
0.390
Why?
Evidence-Based Medicine
1
2013
146
0.380
Why?
Treatment Outcome
11
2022
2426
0.370
Why?
Abortion, Spontaneous
3
2021
17
0.370
Why?
Male
20
2025
13934
0.360
Why?
Pregnancy, Multiple
3
2015
8
0.350
Why?
Young Adult
15
2022
2839
0.350
Why?
Insemination
2
2020
6
0.330
Why?
Methotrexate
2
2021
36
0.320
Why?
Sperm Motility
3
2025
16
0.310
Why?
Randomized Controlled Trials as Topic
7
2022
404
0.310
Why?
5'-Nucleotidase
4
2002
13
0.300
Why?
Body Mass Index
5
2022
412
0.300
Why?
Antioxidants
2
2021
224
0.290
Why?
Inhibins
4
2012
8
0.290
Why?
Follicular Phase
2
2004
8
0.280
Why?
Middle Aged
10
2019
7416
0.270
Why?
Adolescent
13
2021
3197
0.270
Why?
United States
8
2022
2225
0.250
Why?
Triazoles
2
2015
16
0.230
Why?
Nitriles
2
2015
38
0.230
Why?
Patient Selection
2
2015
150
0.220
Why?
Risk Factors
7
2022
2127
0.220
Why?
Triglycerides
2
2022
123
0.210
Why?
Retrospective Studies
6
2025
2635
0.210
Why?
Galanin-Like Peptide
1
2003
1
0.210
Why?
Infant, Newborn
4
2020
916
0.200
Why?
Sympathetic Nervous System
1
2003
68
0.200
Why?
Insemination, Artificial, Homologous
2
2020
4
0.190
Why?
Metabolic Syndrome
2
2021
80
0.190
Why?
Dilatation and Curettage
2
2021
4
0.190
Why?
Androgens
2
2020
47
0.190
Why?
Chi-Square Distribution
4
2015
145
0.190
Why?
Proprotein Convertase 9
1
2022
4
0.190
Why?
Subtilisins
1
2022
6
0.190
Why?
Semen Analysis
4
2025
13
0.190
Why?
Cholesterol, LDL
1
2022
64
0.190
Why?
Testosterone
2
2019
74
0.180
Why?
Predictive Value of Tests
3
2016
485
0.180
Why?
Decision Support Techniques
1
2022
51
0.180
Why?
Cohort Studies
5
2022
897
0.180
Why?
Lipoproteins
1
2022
99
0.180
Why?
Vitamins
1
2021
23
0.180
Why?
Hydrocortisone
1
2022
89
0.180
Why?
Anti-Mullerian Hormone
2
2012
6
0.170
Why?
Precision Medicine
1
2022
82
0.170
Why?
Sleep
1
2021
112
0.170
Why?
Cholesterol
1
2022
203
0.170
Why?
Endometrium
1
2020
39
0.170
Why?
Ethiodized Oil
1
2020
2
0.170
Why?
Fertility Agents
1
2020
2
0.160
Why?
Gonadotropin-Releasing Hormone
2
2015
37
0.160
Why?
Fertilization
2
2022
10
0.160
Why?
Surveys and Questionnaires
3
2021
1002
0.160
Why?
Child Behavior
1
2020
30
0.160
Why?
Child
3
2020
2291
0.160
Why?
Pregnancy Complications
1
2021
112
0.160
Why?
BRCA2 Protein
1
2019
20
0.160
Why?
Reproductive Medicine
2
2018
4
0.160
Why?
BRCA1 Protein
1
2019
25
0.160
Why?
Metformin
1
2020
36
0.160
Why?
Contrast Media
1
2020
96
0.150
Why?
Fallopian Tubes
2
2018
15
0.150
Why?
Erectile Dysfunction
1
2019
15
0.150
Why?
Water
1
2020
135
0.150
Why?
Ovulation
2
2018
28
0.150
Why?
Spermatogenesis
1
2019
11
0.150
Why?
Leiomyoma
1
2019
9
0.150
Why?
Child Development
1
2020
79
0.150
Why?
Endocrinologists
1
2019
2
0.150
Why?
National Institute of Child Health and Human Development (U.S.)
1
2018
2
0.150
Why?
Ethics Committees, Research
1
2018
6
0.150
Why?
Clinical Protocols
1
2018
46
0.140
Why?
Pre-Eclampsia
1
2018
49
0.140
Why?
Menstrual Cycle
2
2012
24
0.140
Why?
Gynecology
1
2019
60
0.140
Why?
Antidepressive Agents
1
2018
29
0.140
Why?
Reproducibility of Results
3
2010
787
0.140
Why?
Vitamin D
1
2018
51
0.140
Why?
Vitamin D Deficiency
1
2018
31
0.140
Why?
Transcriptome
1
2019
231
0.130
Why?
Diabetes, Gestational
1
2018
69
0.130
Why?
Quality of Life
2
2019
521
0.130
Why?
Sexual Dysfunction, Physiological
1
2017
6
0.130
Why?
Depression
1
2019
225
0.130
Why?
Oxidative Stress
1
2021
677
0.130
Why?
Depressive Disorder, Major
1
2018
127
0.120
Why?
Alcohol Drinking
2
2015
176
0.120
Why?
Contraceptives, Oral
1
2015
23
0.120
Why?
Chlamydia trachomatis
1
2015
16
0.120
Why?
Chlamydia Infections
1
2015
17
0.120
Why?
Patient Dropouts
1
2015
6
0.120
Why?
Multicenter Studies as Topic
3
2021
48
0.120
Why?
Promoter Regions, Genetic
2
2002
344
0.120
Why?
Cross-Sectional Studies
2
2017
995
0.120
Why?
Ovulation Inhibition
1
2015
1
0.110
Why?
Contraceptives, Oral, Hormonal
1
2015
9
0.110
Why?
Referral and Consultation
1
2015
98
0.110
Why?
Antibodies, Bacterial
1
2015
103
0.110
Why?
Organ Size
2
2020
88
0.110
Why?
United States Food and Drug Administration
1
2015
46
0.110
Why?
Time Factors
2
2018
1613
0.110
Why?
Models, Theoretical
1
2015
134
0.110
Why?
Case-Control Studies
3
2018
739
0.110
Why?
Regulatory Sequences, Nucleic Acid
1
1994
26
0.110
Why?
Analysis of Variance
1
2014
391
0.100
Why?
Immunoglobulin G
1
2015
272
0.100
Why?
Severity of Illness Index
2
2013
465
0.100
Why?
Androgen-Insensitivity Syndrome
1
2013
4
0.100
Why?
Protein Biosynthesis
1
1994
111
0.100
Why?
Preoperative Care
1
2013
81
0.100
Why?
Research Design
2
2019
187
0.100
Why?
Prevalence
3
2019
518
0.100
Why?
Risk Assessment
4
2022
631
0.100
Why?
Congresses as Topic
1
2012
35
0.090
Why?
Smoking
1
2015
478
0.090
Why?
Infant
2
2020
1025
0.090
Why?
Down-Regulation
2
2019
202
0.090
Why?
Child, Preschool
2
2020
1173
0.080
Why?
Follow-Up Studies
3
2020
1032
0.080
Why?
RNA, Messenger
3
2003
668
0.080
Why?
Multivariate Analysis
3
2015
302
0.080
Why?
Recombinant Proteins
2
2004
416
0.070
Why?
Magnetic Resonance Imaging
1
2013
841
0.070
Why?
Double-Blind Method
2
2020
422
0.070
Why?
Anthropometry
1
2008
93
0.070
Why?
Hyperandrogenism
2
2018
11
0.070
Why?
Observer Variation
2
2007
46
0.070
Why?
Hydronephrosis
1
2007
11
0.070
Why?
Ureteral Obstruction
1
2007
12
0.060
Why?
Base Sequence
4
1995
589
0.060
Why?
Animals
4
2013
10699
0.060
Why?
Cloning, Molecular
3
1995
208
0.060
Why?
Stents
1
2007
121
0.060
Why?
Molecular Sequence Data
4
1995
1056
0.060
Why?
Prognosis
2
2020
811
0.060
Why?
Image Processing, Computer-Assisted
1
2007
254
0.060
Why?
Phenotype
2
2018
686
0.060
Why?
Odds Ratio
2
2015
237
0.060
Why?
Inhibin-beta Subunits
1
2004
3
0.050
Why?
Activins
1
2004
4
0.050
Why?
Injections, Intraventricular
1
2003
7
0.050
Why?
Metabolism
1
2003
9
0.050
Why?
Arcuate Nucleus of Hypothalamus
1
2003
5
0.050
Why?
Pituitary Gland
1
2003
53
0.050
Why?
Academic Medical Centers
2
2015
76
0.050
Why?
Uncoupling Protein 1
1
2003
22
0.050
Why?
Adipose Tissue, Brown
1
2003
22
0.050
Why?
Ion Channels
1
2003
28
0.050
Why?
Pro-Opiomelanocortin
1
2003
14
0.050
Why?
Reference Values
1
2003
200
0.050
Why?
Eating
1
2003
71
0.050
Why?
Leptin
1
2003
67
0.050
Why?
Drug Administration Schedule
1
2003
224
0.050
Why?
Mitochondrial Proteins
1
2003
80
0.050
Why?
Logistic Models
2
2015
410
0.050
Why?
Body Weight
1
2003
250
0.050
Why?
alpha-Amylases
1
2022
3
0.050
Why?
Coitus
1
2022
14
0.050
Why?
Maternal Age
1
2022
25
0.050
Why?
Snoring
1
2021
8
0.050
Why?
Preconception Care
1
2022
18
0.040
Why?
Uterine Hemorrhage
1
2021
9
0.040
Why?
Carrier Proteins
1
2003
255
0.040
Why?
Clinical Decision-Making
1
2022
63
0.040
Why?
Ultrasonography, Prenatal
1
2021
36
0.040
Why?
Weight Loss
1
2022
83
0.040
Why?
Sleep Apnea, Obstructive
1
2021
43
0.040
Why?
Intestinal Mucosa
1
2002
198
0.040
Why?
Sleep Wake Disorders
1
2021
65
0.040
Why?
Immunohistochemistry
2
2019
465
0.040
Why?
Patient Satisfaction
1
2021
96
0.040
Why?
Nuclear Proteins
1
2002
249
0.040
Why?
Combined Modality Therapy
1
2021
303
0.040
Why?
Family Characteristics
1
2020
47
0.040
Why?
Gestures
1
2020
1
0.040
Why?
Rats
1
2003
1588
0.040
Why?
Heterozygote
1
2019
69
0.040
Why?
Germ-Line Mutation
1
2019
31
0.040
Why?
Weight Gain
1
2020
76
0.040
Why?
Observational Studies as Topic
1
2019
55
0.040
Why?
RNA Processing, Post-Transcriptional
1
2019
20
0.040
Why?
Membrane Proteins
1
2003
485
0.040
Why?
Chromatin Assembly and Disassembly
1
2019
20
0.040
Why?
Gene Regulatory Networks
1
2019
82
0.040
Why?
DNA-Binding Proteins
1
2002
490
0.040
Why?
Hypoglycemic Agents
1
2020
110
0.040
Why?
Transcription Factors
1
2002
523
0.040
Why?
Birth Weight
1
2018
63
0.040
Why?
Pilot Projects
1
2020
464
0.030
Why?
Mice, Inbred C57BL
1
2003
1658
0.030
Why?
Registries
1
2020
397
0.030
Why?
DNA Methylation
1
2019
152
0.030
Why?
Asian Americans
1
2018
40
0.030
Why?
Age Factors
1
2020
737
0.030
Why?
Diagnosis, Differential
1
2018
379
0.030
Why?
Exercise
1
2022
498
0.030
Why?
Sex Hormone-Binding Globulin
1
2017
4
0.030
Why?
Hirsutism
1
2017
18
0.030
Why?
Waist Circumference
1
2017
20
0.030
Why?
Hypertriglyceridemia
1
2017
8
0.030
Why?
Mice
3
2003
4808
0.030
Why?
Transcription, Genetic
2
1995
404
0.030
Why?
Cognition
1
2020
331
0.030
Why?
Laparoscopy
1
2018
156
0.030
Why?
Adenosine Deaminase
1
1995
5
0.030
Why?
Sequence Deletion
1
1995
66
0.030
Why?
Serologic Tests
1
2015
19
0.030
Why?
African Americans
1
2018
352
0.030
Why?
Base Composition
1
1995
110
0.030
Why?
Receptors, Purinergic P1
1
1995
2
0.030
Why?
Gene Expression Regulation, Enzymologic
1
1995
94
0.030
Why?
Blood Glucose
1
2017
310
0.030
Why?
Linear Models
1
2015
202
0.030
Why?
Enzyme-Linked Immunosorbent Assay
1
2015
257
0.030
Why?
Drug Therapy, Combination
1
2015
209
0.030
Why?
Binding Sites
1
1995
355
0.030
Why?
Antibodies
1
1995
125
0.030
Why?
Internet
1
2015
126
0.030
Why?
RNA Caps
1
1994
2
0.030
Why?
Genomic Library
1
1994
10
0.030
Why?
Restriction Mapping
1
1994
24
0.030
Why?
Gene Amplification
1
1994
23
0.030
Why?
Orchiectomy
1
2013
12
0.030
Why?
Epididymis
1
2013
8
0.030
Why?
Placenta
1
1994
78
0.020
Why?
Indians, North American
1
2018
544
0.020
Why?
Superovulation
1
2012
6
0.020
Why?
Alcoholic Beverages
1
2012
4
0.020
Why?
Coffee
1
2012
5
0.020
Why?
Tea
1
2012
7
0.020
Why?
Risk Reduction Behavior
1
2012
46
0.020
Why?
Abdominal Pain
1
2007
35
0.020
Why?
Emergency Service, Hospital
1
2007
122
0.010
Why?
Sequence Homology, Amino Acid
2
1995
133
0.010
Why?
Luteinizing Hormone
1
2004
57
0.010
Why?
Amino Acid Sequence
2
1995
697
0.010
Why?
Apyrase
1
2002
4
0.010
Why?
Hypoxia-Inducible Factor 1
1
2002
11
0.010
Why?
Cyclic AMP Response Element-Binding Protein
1
2002
25
0.010
Why?
Permeability
1
2002
61
0.010
Why?
Cell Hypoxia
1
2002
35
0.010
Why?
Adenosine Triphosphatases
1
2002
50
0.010
Why?
Hypoxia-Inducible Factor 1, alpha Subunit
1
2002
59
0.010
Why?
Antigens, CD
1
2002
140
0.010
Why?
Cells, Cultured
1
2002
1022
0.010
Why?
Gene Expression Regulation
1
2002
634
0.010
Why?
Chickens
1
1995
62
0.010
Why?
Antibody Formation
1
1995
77
0.010
Why?
DNA Primers
1
1995
147
0.010
Why?
Mice, Inbred BALB C
1
1995
278
0.010
Why?
Ribonucleases
1
1993
9
0.010
Why?
Peptide Fragments
1
1995
202
0.010
Why?
Organ Specificity
1
1993
82
0.010
Why?
Blotting, Western
1
1995
515
0.010
Why?
Polymerase Chain Reaction
1
1993
270
0.010
Why?
DNA
1
1993
377
0.010
Why?
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Concepts (312)
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