1. Duke Eye Center, Durham, North Carolina
2. Jaeb Center for Health Research, Tampa, Florida
3. Eastern Virginia Medical School, Norfolk
4. Emory University School of Medicine, Atlanta, Georgia
5. Texas Children’s Hospital, Houston
6. Pediatric Ophthalmology Associates Inc, Columbus, Ohio
7. Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
8. Riley Hospital for Children, Indianapolis, Indiana
9. Boston Children’s Hospital, Boston, Massachusetts
10. Dean McGee Eye Institute, University of Oklahoma, Oklahoma City
11. Wilmer Eye Institute, Baltimore, Maryland
12. Smith-Kettlewell Eye Research Institute, San Francisco, California
13. John A. Moran Eye Center, Salt Lake City, Utah
14. Baylor College of Medicine, Houston, Texas
15. Mayo Clinic, Rochester, Minnesota