Influence of Estrogen Plus Progestin on Breast Cancer and Mammography in Healthy Postmenopausal Women: The Women’s Health Initiative Randomized Trial

Chlebowski, Rowan T.; Hendrix, Susan L.; Langer, Robert D.; Stefanick, Marcia L.; Gass, Margery; Lane, Dorothy; Rodabough, Rebecca J.; Gilligan, Mary Ann ; Cyr, Michele G.; Thomson, Cynthia A.; Khandekar, Janardan; Petrovitch, Helen; McTiernan, Anne for the WHI Investigators