1. Professor of Anesthesiology, College of Physicians and Surgeons of Columbia University.
2. Assistant Professor of Anesthesiology, College of Physicians and Surgeons of Columbia University.
3. Associate Professor of Clinical Anesthesiology, College of Physicians and Surgeons of Columbia University.
4. Professor of Anesthesiology, Obstetrics and Gynecology, College of Physicians and Surgeons of Columbia University.
5. Senior Research Associate in Anesthesiology, College of Physicians and Surgeons of Columbia University.
6. Research Fellow in Obstetrics and Gynecology, College of Physicians and Surgeons of Columbia Univeristy.
7. Assistant Professor of Anaesthesia, Harvard Medical School, Brigham and Women's Hospital.
8. Professor of Anaesthesia, Harvard Medical School, and Chairman, Department of Anesthesiology, Brigham and Women's Hospital.