Dr. M. Masudur Rahman MBBS, FCPS, MD, FACP, FACG, FRCP is currently working as Associate Professor in the Department of Gastroenterology at Sheikh Tussel National Gastroliver Institute and Hospital, Dhaka, Bangladesh. Inspite of being a busy clinician and endoscopist, he has a good number of publications in different international and national journals including some high impact prestigious journals including New England Journal of Medicine, Gastroenterology and American Journal of Gastroenterology. He is a founder member and the Scientific Secretary of Gastroliver Foundation Bangladesh. He is peer reviewer to a number of international journals.  He is highly skilled in various diagnostic and therapeutic endoscopies including ERCP. He has basic and advanced training in research methodology and biostatistics.  He is a passionate researcher and teacher not only in Gastroenterology but also in research methodology and Biostatistics. Luminal gastrointestinal diseases are the major areas of his research interest.