1. Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
2. Northwestern University Feinberg School of Medicine, Chicago, Illinois
3. Geisinger Health System, Danville, Pennsylvania
4. Marshfield Clinic Research Foundation, Marshfield, Wisconsin
5. Essentia Institute of Rural Health, Duluth, Minnesota
6. University of Washington Medical Center, Seattle, Washington
7. Group Health Research Institute, Seattle, Washington
8. Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
9. U.S. Department of Veterans Affairs Medical Center, Cincinnati, Ohio
10. Mayo Clinic, Rochester, Minnesota; and
11. Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania