1. Division of General Surgery, Department of Surgery, Chi-Mei Medical Center, Tainan
2. Division of Colon & Rectal Surgery, Department of Surgery, Taipei Veterans General Hospital and National Yang-Ming University, Taipei
3. Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung
4. Division of General Surgery, Department of Surgery, Chi-Mei Hospital, Chiali, Tainan
5. Min-Hwei College of Health Care Management, Tainan, Taiwan