[1] Radboud Univ Nijmegen, Dept Surg, Med Ctr, R618,Geert Grootepl Zuid 10, NL-6525 GA Nijmegen, Netherlands
[2] Imperial Coll, Dept Surg & Canc, London, England
[3] Univ Amsterdam, Amsterdam Univ Med Ctr, Dept Surg, Amsterdam, Netherlands
[4] Radboud Univ Nijmegen, Dept Operating Rooms, Med Ctr, Nijmegen, Netherlands
[5] UZ Leuven, Dept Surg, Leuven, Belgium
[6] Hosp Clin Barcelona, Dept Surg, Barcelona, Spain
[7] Sorbonne Univ, Dept Digest Surg, Hop St Antoine, AP HP, Paris, France
[8] Univ Sydney, Dept Surg, Cent Clin Sch, Camperdown, NSW, Australia
[9] Valencia Univ Hosp La Fe, Dept Surg, Valencia, Spain
[10] Hosp Aleman, Dept Surg, Buenos Aires, DF, Argentina
[11] Bordeaux Univ Hosp, Dept Surg, Bordeaux, France
[12] Hosp Alemao Oswaldo Cruz, Colorectal Surg, Sao Paulo, Brazil
[13] Japanese Fdn Canc Res, Dept Gastroenterol Surg, Canc Inst Hosp, Tokyo, Japan
[14] Beaujon Hosp, Colorectal Dept, Clichy, France
[15] Univ Paris, Clichy, France