1. Department of Colorectal Surgery China Medical University Hospital Taichung Taiwan
2. A Fingerhut Surgical Research Department of Surgery Medical University of Graz Graz Austria
3. Department of General Surgery Shanghai Minimally Invasive Surgery Center Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
4. Department of Colorectal Surgery China Medical University Hospital Zubei Taiwan
5. China Medical University Hsinchu Hospital Zubei Taiwan