1. Research Fellow in Obstetrical Anesthesia, University of California, San Francisco. Present address: Department of Anesthesia, University of Iowa Hospital and Clinics, Iowa City, Iowa.
2. Assistant Professor of Anesthesia, University of California, San Francisco.
3. Professor of Anesthesia, Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco.
4. Associate Professor of Anesthesia, Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco.
5. Associate Professor of Clinical Anesthesia, University of Southern California.
6. Associate Professor of Anesthesia, University of Southern California.
7. Research Fellow in Obstetrical Anesthesia, University of Southern California.
8. Staff Research Associate, University of California, San Francisco.