1. Smt. Kanuri Santhamma Centre for Vitreo-Retinal Diseases, L V Prasad Eye Institute, Hyderabad, India
2. Department of Ophthalmology, Indian Health Outcomes, Public Health and Economics Research Centre (IHOPE), Hyderabad, India
3. Department of Ophthalmology, UPMC Eye Centre, University of Pittsburg, Pittsburg, PA, USA