1. Jacobs School of Biomedical Sciences, University of Buffalo, Department of Neurology, Buffalo, USA
2. Tribhuvan University, Institute of Medicine, Kathmandu 44600, Nepal
3. Medical Database, Irvine, California, USA
4. Rochester General Hospital, New York, USA
5. Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
6. Department of Microbiology, Tribhuvan University, Institute of Medicine, Maharajgunj, 44600, Nepal
7. School of Optometry and Vision Science, Faculty of Medicine, University of New South Wales, Sydney, Australia