1. Instructor, Department of Anesthesiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
2. Clinical Associate, Department of Psychiatry, University of Chicago, Pritzker School of Medicine, Chicago, Illinois.
3. Professor, Department of Anesthesiology, Northwestern University, Feinberg School of Medicine.
4. Research Professor, Department of Anesthesiology, Northwestern University, Feinberg School of Medicine.