1. Emeritus Professor of Pediatries, Mount Sinai School of Medicine of the City University of New York.
2. Professor and Chairman, Department of Anesthesiology, Yale University School of Medicine.
3. Professor of Physiology at the State University of New York, Downstate Medical Center.
4. Associate Professor of Anesthesiology and Pediatries, Yale University School of Medicine.
5. Emeritus Professor of Epidemiology and Physiology, Yale University School of Medicine.