1. Department of Ophthalmology, Kalpana Chawla Government Medical College and Hospital, Karnal, Haryana, India
2. BGS, Global Institute of Medical Sciences, Bengaluru, Karnataka, India
3. Department of Community Medicine, Kalpana Chawla Government Medical College and Hospital, Karnal, Haryana, India
4. Minto Regional Institute of Ophthalmology, Bangalore Medical College and Research Institute, Bangalore, Karnataka, India