1. Departments of Internal Medicine and Pediatrics at Medstar Georgetown University Hospital, Washington, District of Columbia;
2. Division of Workforce and Medical Education Policy at the American Academy of Pediatrics, Elk Grove Village, Illinois;
3. Departments of Internal Medicine and Pediatrics at the University of Michigan Health System, Ann Arbor, Michigan;
4. Departments of Internal Medicine and Pediatrics at Christiana Care Health System, Wilmington, Delaware; and
5. Independent research professional under contract to the American Academy of Pediatrics, Elk Grove Village, Illinois