1 Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan.
2 Clinical Trial Center, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan.
3 Division of Gastroenterology and Hepatology, An Nan Hospital, China Medical University, Tainan, Taiwan.
4 Internal Medicine, National Taiwan University Hospital, Taiwan.
5 Division of Colorectal Surgery, Kaohsiung Veteran General Hospital, Kaohsiung, Taiwan.
6 School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.