1 Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada.
2 Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
3 Department of Ophthalmology & Vision Science, University of Toronto, Toronto, Ontario, Canada.
4 Department of Ophthalmology & Vision Science, University of Toronto, Toronto, Ontario, Canada; Retina Division, Stein Eye Institute, Department of Ophthalmology, University of California Los Angeles, California, United States of America.
5 Retina Consultants of Texas, Retina Consultants of America, Houston, Texas, United States of America; Blanton Eye Institute, Houston Methodist Hospital & Weill Cornell Medical College, Houston, Texas, United States of America.
6 Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, British Columbia, Canada.
7 Department of Ophthalmology & Vision Science, University of Toronto, Toronto, Ontario, Canada; Sunnybrook Health Sciences Centre, University of Toronto, North York, Ontario, Canada.
8 Department of Ophthalmology & Vision Science, University of Toronto, Toronto, Ontario, Canada; St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.