Yusuke Sakimura; Hiroyuki Bando; Koya Hida; Tatsunari Fukuoka; Tohru Funakoshi; Fuminori Teraishi; Kay Uehara; Yuji Inoue; Nobuaki Suzuki; Nobuki Ichikawa; Hiroaki Iijima; Akinobu Taketomi; Yoshiharu Sakai; Takeshi Naitoh; Ichiro Takemasa; the EnSSURE study group collaboratives within the Japan Society of Laparoscopic Colorectal Surgery