This book provides comprehensive insights into the field of gastroenterology. It is a branch of medical science that deals with the study and prevention of diseases affecting the digestive system, that is, organs from mouth to anus and also the alimentary canal. Gastroenterology as a science includes various processes namely endoscopic retrograde cholangiancreatography (ERCP), endoscopy, liver biopsy, colonoscopy, etc. This book includes some of the...