1. Clinical Fellow, Department of Anaesthesia, Harvard Medical School, Boston, Massachusetts, and Resident, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts.
2. Research Assistant, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital.
3. Anesthetist, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital; Warren M. Zapol Professor, Department of Anaesthesia, Harvard Medical School; Professor of Computational Neuroscience, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts; Professor of Health Sciences and Technology, Institute for Medical
4. Assistant Professor, Department of Anaesthesia, Harvard Medical School; Assistant Anesthetist, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital; and Research Affiliate, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology.