1. Associate Professor of Anesthesiology, Department of Anesthesiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
2. Research Assistant Professor of Anesthesiology, Department of Anesthesiology, Northwestern University, Feinberg School of Medicine.
3. Assistant Professor of Anesthesiology, Department of Anesthesiology, Northwestern University, Feinberg School of Medicine.
4. Professor of Clinical Orthopaedic Surgery, Northwestern Orthopaedic Institute, Northwestern University, Feinberg School of Medicine.
5. Research Professor of Anesthesiology, Department of Anesthesiology, Northwestern University, Feinberg School of Medicine.