1. Fellow, Human Pharmacology Laboratory, Visiting Associate, Department of Anesthesiology, Duke University Medical Center. Current position: Attending Anesthesiologist, Department of Anesthesiology, Catholic University School of Medicine, Santiago, Chile.
2. Fellow, Human Pharmacology Laboratory, Department of Anesthesiology, Duke University Medical Center. Current position: Attending Anesthesiologist, Department of Anesthesiology, Mackay Memorial Hospital, Taiwan.
3. Professor of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas. Chief of Anesthesiology, VA North Texas Health Care System, Dallas, Texas.
4. Associate Clinical Professor.
5. Assistant Clinical Professor, Department of Anesthesiology.
6. Assistant Professor and Director, Human Pharmacology Laboratory, Department of Anesthesiology, Duke University Medical Center.