1. Division of Gastroenterology; Department of Internal Medicine, Yuan's General Hospital; Kaohsiung Taiwan
2. Department of Pathology; Yuan's General Hospital; Kaohsiung Taiwan
3. Division of Gastroenterologic Surgery; Department of Surgery, Yuan's General Hospital; Kaohsiung Taiwan
4. Division of Colorectal Surgery; Department of Surgery, Yuan's General Hospital; Kaohsiung Taiwan