1. Assistant Clinical Professor, Department of Anesthesia, and Associate Staff Member, Cardiovascular Research Institute, University of California Medical Center, San Francisco, California.
2. Chairman, Department of Anesthesia, American University of Beirut, Beirut, Lebanon.
3. Research Trainee, Department of Anesthesia. University of California Medical Center.
4. Associate Professor, Department of Anesthesia, and Staff Member, Cardiovascular Research Institute, University of California Medical Center.