Gin-Shen Su1, Tsung-Wei Chen2, Jen-Wei Chou3. 1. Division of Gastroenterology and Hepatology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, Republic of China. 2. Department of Pathology, China Medical University Hospital, Taichung, Taiwan, Republic of China. 3. Division of Gastroenterology and Hepatology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, Republic of China; School of Medicine, China Medical University, Taichung, Taiwan, Republic of China; Taiwan Association for the Study of Small Intestinal Diseases, Taiwan, Republic of China.