1. Department of Ophthalmology, 5-Azar Hospital, Golestan University of Medical Sciences, Gorgan, Iran
2. Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
3. Eye Research Center, The Five Senses Institute, Rasool Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
4. Department of Ophthalmology, Abadan University of Medical Sciences, Abadan, Iran
5. Department of Ophthalmology, Shafa Hospital, Kerman University of Medical Sciences, Kerman, Iran