1. Department of General Surgery, Diamond Harbour Government Medical College and Hospital, Diamond Harbour, West Bengal, India
2. Department of Pediatric Medicine, R. G. Kar Medical College, Kolkata, West Bengal, India
3. Department of General Surgery, TLJ State General Hospital, Howrah, West Bengal, India
4. Department of Pediatric Surgery, R. G. Kar Medical College, Kolkata, West Bengal, India