1. Department of Ophthalmology, College of Medicine and Sagore Dutta Hospital, Kolkata, West Bengal, India
2. Department of Pediatric Surgery, R. G. Kar Medical College, Kolkata, West Bengal, India
3. Department of Pediatric Medicine, College of Medicine and Sagore Dutta Hospital, Kolkata, West Bengal, India
4. Department of Pediatric Medicine, R. G. Kar Medical College, Kolkata, West Bengal, India