1. Department of Obstetrics, Gynecology, and Reproductive Biology (J.R.), Brigham and Women’s Hospital, Boston, Massachusetts 02115
2. Departments of Pharmacology (J.P.B.), Columbia University College of Physicians and Surgeons, New York, New York 10032
3. Departments of Medicine (J.P.B., L.M.), Columbia University College of Physicians and Surgeons, New York, New York 10032
4. Departments of Radiology (S.J.S.), Columbia University College of Physicians and Surgeons, New York, New York 10032