Affiliation: | 1. Division of Colorectal Surgery, Department of Surgery, Faculty of Medicine, University Malaya, , Kuala Lumpur, Malaysia;2. Department of Social and Preventive Medicine, Julius Centre University of Malaya, Faculty of Medicine, University Malaya, , Kuala Lumpur, Malaysia;3. Division of Gastroenterology, Department of Medicine, Faculty of Medicine, University Malaya, , Kuala Lumpur, Malaysia |