1. Children's Health Ireland (CHI) at Temple Street, Dublin, Ireland
2. Centre for Eye Research Ireland, Technological University of Dublin, Dublin, Ireland
3. Birmingham Children's Hospital, Steelhouse Lane Birmingham, United Kingdom
4. Singapore National Eye Center, Singapore
5. Southern California College of Optometry, Marshall B Ketchum University, Fullerton, California, United States
6. Wertheim School Optometry and Vision Science, Berkeley, California, United States
7. University of California – San Francisco, School of Medicine, San Francisco, California, United States
8. Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
9. Department of Ophthalmology, Erasmus Medical Center, Rotterdam, The Netherlands
10. Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
11. Department of Ophthalmology, Radboud University Medical Center, Nijmegen, The Netherlands
12. Institute of Molecular and Clinical Ophthalmology, Basel, Switzerland
13. UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, United States
14. Tokyo Medical and Dental University, Tokyo, Japan
15. Baylor College of Medicine and Texas Children's Hospital, Houston, Texas, United States
16. Wilmer Eye Institute, The John Hopkins University School of Medicine, Baltimore, Maryland, United States
17. Ophthalmology Center Glazka, Novosibirsk, Russia
18. Department of Vitreoretinal Research, John van Geest Centre for Brain Repair, University of Cambridge, United Kingdom
19. Department of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands
20. L V Prasad Eye Institute, Hyderabad, India