1. Department of Ophthalmology, Shiraz University of Medical Sciences, Shiraz, Iran
2. Education and research, Rajan Eye Care Hospital, Chennai, India
3. Ophthalmology unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
4. Ophthalmology Unit, DIMES, Alma Mater Studiorum Università di Bologna, Bologna, Italy
5. Department of Ophthalmology, University of Pittsburgh Eye and Ear Institute, Pittsburgh, PA, USA