1. Advisium, 's Heeren Loo Zorggroep Amersfoort The Netherlands
2. Department of Psychiatry and Neuropsychology Maastricht University Maastricht The Netherlands
3. Department of Ophthalmology University Medical Center Utrecht Utrecht The Netherlands
4. University Eye Clinic Maastricht Maastricht University Medical Center Maastricht The Netherlands
5. Department of Ophthalmology Máxima Medical Center Veldhoven The Netherlands
6. Department of Pediatrics Máxima Medical Center Veldhoven The Netherlands
7. ENCORE, Erasmus Medical Center Rotterdam The Netherlands
8. Emma Children's Hospital University of Amsterdam Amsterdam The Netherlands
9. Department of Pediatrics, Wilhelmina Children's Hospital University Medical Center Utrecht Utrecht The Netherlands
10. The Dalglish Family 22q Clinic University Health Network Toronto Ontario Canada