Feeding and eating disorders in neonates, infants and adolescence Managing babies with failure to thrive and poor weight gain Neonatal and childhood achalasia Acute and chronic constipation Upper and lower GI bleeding (sclerotherapy, banding, clip and polypectomy) Eosinophilic/ allergic esophagitis, esophageal and gastric motility disorders Removal of foreign body from GI tract using endoscopy Gastritis, gastro-esophageal reflux disease Celiac disease/ gluten (wheat) sensitivity, duplication cyst, short bowel syndrome Irritable bowel syndrome Inflammatory bowel disease (Crohn's and Ulcerative colitis) Diagnosis and management of various liver diseases Pre and post liver transplant (living related and cadaveric)