1. School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India;
2. Johns Hopkins University School of Medicine, Baltimore, MD, USA;
3. Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY, USA;
4. Department of Ophthalmology Calcutta National Medical College and Hospital, Kolkata, West Bengal, India;
5. Department of Electrical Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India