1. London Health Sciences Centre and Western University, London, Ontario, Canada
2. Cleveland Clinic, Cleveland, Ohio
3. McMaster University, Hamilton Health Sciences Centre, St Joseph’s Healthcare and the Population Health Research Institute, Hamilton, Ontario, Canada
4. Yale University School of Medicine, New Haven, Connecticut
5. Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
6. Fundación Oftalmológica de Santander, Bucaramanga, Colombia
7. Herlev Hospital and the University of Copenhagen, Copenhagen, Denmark
8. Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
9. Clinica Santa Maria, Universidad de los Andes, Santiago, Chile
10. Kingston General Hospital, Kingston, Ontario, Canada
11. Hospital Vall d'Hebron, Barcelona, Spain
12. Shifa International Hospitals Limited, Islamabad, Pakistan
13. CHU Brugmann, Brussels, Belgium
14. San Raffaele Scientific Institute, Milan, Italy
15. Vejle Hospital, Vejle, Denmark
16. Hospital Nacional Cayetano Heredia, Lima, Peru
17. Monash University, Melbourne, Australia
18. University of North Carolina Medical School, Chapel Hill
19. Vienna General Hospital and the Medical University of Vienna, Vienna, Austria
20. Fundación Cardioinfantil and the Universidad Autónoma de Bucaramanga, Bogotá, Colombia
21. Royal Adelaide Hospital, Adelaide, Australia
22. Nelson R. Mandela School of Medicine, Durban, South Africa
23. Ohio State University Medical Center, Columbus
24. University of Manitoba, Winnipeg, Canada
25. University of Texas and MD Anderson Cancer Center, Houston
26. University Health Network and the University of Toronto, Toronto, Ontario, Canada
27. Mahatma Gandhi Institute of Medical Sciences, Wardha, India
28. Royal Melbourne Hospital, Melbourne, Australia
29. Cliniques Universitaires Saint-Luc and the Université Catholique de Louvain, Brussels, Belgium