1. Second Department of Ophthalmology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. Department of Hygiene and Epidemiology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia4Department of Surgery, North Shore University Health System, Evanston, Illinois5Department of Surgery, University of Chicago Pritzker School of Medicine, Chicag
4. Crystal Charity Ball Pediatric Vision Evaluation Center, Retina Foundation of the Southwest, Dallas, Texas
5. Pediatric Ophthalmology and Adult Strabismus, Plano, Texas
6. Clinical and Academic Department of Ophthalmology, Great Ormond Street Hospital, London, England9Western Eye Hospital, London, England
7. Clinical and Academic Department of Ophthalmology, Great Ormond Street Hospital, London, England
8. Division of Ophthalmology, Department of Surgery, Santa Clara Valley Medical Center, San Jose, California
9. Vision Clinic, Alberta Children’s Hospital, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
10. Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia
11. Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
12. Save Sight Institute, Discipline of Ophthalmology, Sydney Eye Hospital Campus, Sydney Medical School, University of Sydney, Sydney, Australia
13. Clinical and Academic Department of Ophthalmology, Great Ormond Street Hospital, London, England14UPMC Eye Center, Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania