1 Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass; Division of Women's Health, Brigham and Women's Hospital, Boston, Mass. Electronic address: [email protected].
2 Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass.
3 Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass; Botswana Harvard AIDS Initiative Partnership, Gabarone, Botswana.
4 Department of Obstetrics and Gynecology, Boston Medical Center, Boston, Mass.
5 Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, Mass; Harvard Medical School, Boston, Mass; Division of Women's Health, Brigham and Women's Hospital, Boston, Mass.