Institution: | 1. Department of Obstetrics and Gynecology, Columbia Presbyterian Medical Center, 622 West 168th Street, New York, NY 10032, USA;2. Department of Obstetrics and Gynecology, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA;3. Department of Radiology, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA;4. Department of Radiology, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA |