1. Center for Global Health, Department of Public Health, Aarhus University, Denmark
2. Ophthalmic Epidemiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3. Eye Research Center, Amiralmomenin Hospital, Guilan University of Medical Sciences, Rasht, Iran
4. Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran