1. Instructor in Anesthesia, Harvard Medical School; Associate in Anesthesia, The Children's Hospital.
2. Assistant Professor, Department of Biostatistics, Harvard School of Public Health.
3. Assistant Professor, Tufts University School of Medicine, Division of Clinical Pharmacology, Tufts-New England Medical Center.
4. Assistant Professor, Department of Pediatrics, The University of Chicago, Wyler Children's Hospital.