1. Associate Professor, Departments of Anesthesiology and Physiology, University of North Carolina.
2. Research Assistant, Department of Anesthesiology, University of North Carolina.
3. Fellow in Anesthesiology, Department of Anesthesiology, University of North Carolina.
4. Group Leader, Wellcome Research Laboratories, Burroughs Wellcome.
5. Senior Research Scientist, Wellcome Research Laboratories, Burroughs Wellcome.
6. Assistant Professor, Department of Anesthesiology, University of North Carolina.
7. Associate Professor, Department of Anesthesiology, University of North Carolina.