Affiliation: | a Program in Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland b Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, George Washington University Medical Center, Washington, D.C. c Laboratory of Surgical Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland |