1 Department of Gastroenterology and Hepatology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan; Taiwan Association of the Study of Small Intestinal Disease, Taoyuan, Taiwan. Electronic address: puohsien@gmail.com.
2 Department of Gastroenterology and Hepatology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.
3 Department of Anatomic Pathology, Linkou Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan. Electronic address: renchin.wu@gmail.com.