1. Department of Biostatistics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
2. Rotterdam Ophthalmic Institute, the Rotterdam Eye Hospital, Rotterdam, The Netherlands
3. Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, TN, USA
4. Department of Genetics, Genomics, and Informatics, University of Tennessee Health Science Center, Memphis, TN, USA