[1] Natl Cheng Kung Univ, Div Colorectal Surg, Dept Surg, Natl Cheng Kung Univ Hosp,Coll Med, Tainan, Taiwan
[2] Sapporo Higashi Tokushukai Hosp, Adv Surg Ctr, Sapporo, Hokkaido, Japan
[3] Fujita Hlth Univ Hosp, Int Med Ctr, Nagoya, Aichi, Japan
[4] Baylor Univ, Med Ctr, Dept Surg, Div Colorectal Surg, 3409 Worth St Worth Tower,Suite 640, Dallas, TX 75230 USA