1 Department of Obstetrics, Gynecology, and Reproductive Biology, Division of Reproductive Endocrinology and Infertility, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts (all authors).
2 Department of Obstetrics, Gynecology, and Reproductive Biology, Division of Reproductive Endocrinology and Infertility, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts (all authors). Electronic address: agargiulo@bwh.harvard.edu.