1. Research Education and Epidemiology Centre, Changhua Christian Hospital, Department of Healthcare Administration and Medical Informatics, Kaohsiung Medical University, Kaohsiung, Taiwan
2. Institute of Health Policy and Management, National Taiwan University, Taipei, Taiwan
3. Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan
4. Department of Colorectal Surgery, E-DA Hospital, Kaohsiung, Taiwan
5. Department of Medical Affairs, E-DA Hospital, Kaohsiung, Taiwan
6. Division of Colorectal Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
7. Department of Surgery, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
8. Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan