1. American Heart Association, Advanced Research Fellow. Present address: The Ohio State University, Department of Medicine, 466 West Tenth Avenue, Columbus, Ohio 43210.
2. Assistant Professor of Anesthesia, Department of Anesthesia, Stanford University, Palo Alto, California.
3. Professor of Anesthesia, Department of Anesthesia, University of California, San Francisco, California.
4. Research trainee. Present address: Department of Anesthesia, Indiana University, Indianapolis, Indiana.