1. Associate Anesthetist, Massachusetts General Hospital; Insturctor in Anaesthesia, Harvard Medical School.
2. Anesthetist, Masschusetts General Hospital; Assistant Clinical Professor of Anaesthesia, Harvard Medical School.
3. Clinical Fellow in Anesthesia, Masschusetts General Hospital; Assistant in Anaesthesia, Harvard Medical School.
4. Associate Anesthetist, Masschusetts General Hospital; Assistant Professor of Anaesthesia, Harvard Medical School.