Felix AS, Brinton LA, McMeekin DS, Creasman WT, Mutch D, Cohn DE, Walker JL, Moore RG, Downs LS, Soslow RA, Zaino R, Sherman ME. Relationships of Tubal Ligation to Endometrial Carcinoma Stage and Mortality in the NRG Oncology/ Gynecologic Oncology Group 210 Trial. J Natl Cancer Inst. 2015 Sep; 107(9).