1. Professor of Anesthesia, Obstetrics, Gynecology and Reproductive Sciences
2. Research Fellow
3. Assistant Professor of Anesthesia, Obstetrics, Gynecology and Reproductive Sciences
4. Assistant Professor of Anesthesia and Medicine
5. Associate Professor of Anesthesiology, Obstetrics and Gynecology, George Washington University Medical Center, 901 23rd Street, N. W., Washington, D. C. 20037