title: Reply.
authors: MedStar Georgetown University Hospital, Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Washington, DC. Electronic address: daphniedrassinower@yahoo.com.
authors: Daphnie
authors: D
authors: Drassinower
authors: Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY.
authors: Alexander M
authors: AM
authors: Friedman
authors: Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY.
authors: Cynthia
authors: C
authors: Gyamfi-Bannerman