Affiliation: | 1. Ophthalmic Research Center, Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran;2. Eye Research Center, Khatam-al-Anbia Hospital, Mashhad University of Medical Sciences, Mashhad, Iran;1. Departments of Ophthalmology and Public Health Sciences, Penn State College of Medicine, Hershey, Pennsylvania;2. The Emmes Corporation, Rockville, Maryland;3. University of Wisconsin Fundus Photograph Reading Center, Madison, Wisconsin |