1. Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020 West Bengal, India
2. Decision Sciences Area, Indian Institute of Management Lucknow, Uttar Pradesh 226013, India
3. Department of Ophthalmology, Regional Institute of Ophthalmology, Medical College Campus, Kolkata, 700073 West Bengal, India