1. Department of GI Surgery, School of Digestive and Liver Diseases, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
2. Department of Gastroenterology, School of Digestive and Liver Diseases, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
3. Department of GI Pathology, School of Digestive and Liver Diseases, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
4. Department of GI Radiology, School of Digestive and Liver Diseases, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India