1Division of Gastroenterology and Hepatology, Department of Internal Medicine, E-DA Dachang Hospital, Kaohsiung, Taiwan;
2Department of Medical Technology, College of Medicine, I-Shou University, Kaohsiung, Taiwan;
3Division of Gastroenterology and Hepatology, Department of Internal Medicine, E-DA Hospital, Kaohsiung, Taiwan;
4School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan;
5Department of Health Examination, E-DA Hospital, Kaohsiung, Taiwan;
6Division of Colorectal Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan;
7Department of Surgery, Faculty of Medicine, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan;
8Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan;
9Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.