1. Assistant Professor, Department of Anaesthesia, Harvard Medical School, Boston, Massachusetts; Assistant Anesthetist, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts; Research Affiliate, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts.
2. Instructor, Department of Anaesthesia, Harvard Medical School; Assistant Anesthetist, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital.
3. Postdoctoral Fellow.
4. Research Assistant, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital.
5. Warren M. Zapol Professor, Department of Anaesthesia, Harvard Medical School; Anesthetist, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital; Professor, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology; Professor, Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology.