1. Assistant Professor of Anesthesia, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts 02114
2. Professor of Anesthesia and Associate of the Cardiovascular Research Institute, University of California, San Francisco, California 94122
3. Assistant Professor, Department of Anesthesia, University of California, San Francisco, California 94122
4. Assistant Professor, Department of Anesthesia, Stanford University, Palo Alto, California
5. Resident in Anesthesia, University of California, San Francisco, California 94122
6. Assistant Professor, Department of Anesthesia, Indiana University, Bloomington, Indiana