1. Research Investigator, Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, Michigan.
2. Associate Professor
3. Professor, Department of Clinical Pharmacology and Therapeutics, Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Assistant Professor, Department of Anesthesiology and Pain Medicine
5. Assistant Professor and Associate Chair for Faculty Affairs, Department of Anesthesiology, and Faculty, Neuroscience Graduate Program, University of Michigan Medical School.