1. Department of Endocrinology and Metabolism; School of Digestive and Liver Diseases; Institute of Post-Graduate Medical Education and Research and Seth Sukhlal Karnani Memorial Hospital; Calcutta India
2. Department of Biochemistry; School of Digestive and Liver Diseases; Institute of Post-Graduate Medical Education and Research and Seth Sukhlal Karnani Memorial Hospital; Calcutta India
3. Department of Gastroenterology; School of Digestive and Liver Diseases; Institute of Post-Graduate Medical Education and Research and Seth Sukhlal Karnani Memorial Hospital; Calcutta India