1. Research Fellow in Anesthesia, Stanford University School of Medicine and Palo Alto VA Medical Center; Research Associate in Pediatrics, Central Laboratory for Human Embryology.
2. Professor of Anesthesia and Associate Chairman, Stanford University School of Medicine; Staff Anesthesiologist, Palo Alto VA Medical Center.
3. Associate Professor of Anesthesia, Stanford University School of Medicine; Chief of Anesthesiology Service, Palo Alto VA Medical Center.
4. Associate Professor of Pediatrics, Central Laboratory for Human Embryology.
5. Professor of Pediatrics and Chief of Central Laboratory for Human Embryology.