1 Melaka Hospital, Department of General Surgery, Ministry of Health Malaysia, Malaysia

2 Division of Colorectal Surgery, China Medical University Hospital, Taichung, Taiwan

3 Division of Colorectal Surgery, China Medical University Hospital, Hsinchu, Taiwan

Funding/Support: None reported.

Financial Disclosure: None reported.

Correspondence: Tao-Wei Ke M.D, Ph.D., Department of Surgery, China Medical University Hospital, 2, Yuh Der Rd, Taichung City 404, Taiwan. E-mail: [email protected]