1. Division of Maternal-Fetal Medicine; Department of Obstetrics and Gynecology; Beth Israel Deaconess Medical Center; Boston MA USA
2. Department of Obstetrics, Gynecology and Reproductive Biology; Harvard Medical School; Boston MA USA
3. Department of Obstetrics and Gynecology; Beth Israel Deaconess Medical Center; Boston MA USA
4. Division of Reproductive Endocrinology and Infertility; Department of Obstetrics and Gynecology; Beth Israel Deaconess Medical Center; Boston MA USA
5. Boston IVF; Waltham MA USA