1. National Board of Medical Examiners, Philadelphia, Pennsylvania, USA
2. Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA
3. Department of Medicine, University of California School of Medicine, San Francisco, California, USA
4. Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
5. Department of Pediatrics, Renaissance School of Medicine at Stony Brook University, New York, New York, USA
6. Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
7. Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
8. Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
9. Department of Pediatrics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA