Degrees. : MD, PhD.H Place of work. : Bumrungrad International Hospital, King Chulalongkorn Memorial Hospital Academic : Emeritus Professor Administrative : Head Colorectal Division, Chulalongkorn University Head Department of Surgery, Chulalongkorn University Head Department of Surgery, Bumrungrad International Hospital Societies/Titles: Past President of Thailand Society of Colorectal surgery Past President of Asia Pacific Federation of Coloproctology Honorary fellow Philippine Society of Colorectal Surgeons Honorary fellow India Society of Colorectal Surgeons Honorary fellow Hong Kong Society of Colorectal Surgeons Honorary fellow Singapore Society of Colorectal Surgeons Honorary fellow American Society of Colon and Rectal Surgeons