1. Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, OH, USA;
2. Department of Pediatrics, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA;
3. Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, USA;
4. Department of Pediatrics, University of California Davis, Sacramento, CA, USA;
5. Department of Pediatrics, Naval Medical Center San Diego, San Diego, CA, USA;
6. Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA;
7. Department of Pediatrics, The University of Texas at Austin, Austin, TX, USA;
8. Department of Pediatrics, St. Christopher’s Hospital for Children, Drexel University College of Medicine, Philadelphia, PA, USA;
9. Association of Pediatric Program Directors (APPD) Longitudinal Educational Assessment Research Network (LEARN), McLean, VA, USA