[1] Univ Autonoma Barcelona, Hosp Univ Vail dHebron, Unidad Cirugia Pared Abdominal, Serv Cirugia Gen & Digest, E-08193 Barcelona, Spain
[2] Univ Pompeu Fabra, Hosp Mar, Dept Ciencias Expt & Salud, Serv Cirugia Gen & Digest, Barcelona, Spain
[3] Hosp Sagunto, Serv Cirugia Gen & Digest, Valencia, Spain
[4] Hosp Igualada, Serv Cirugia Gen & Digest, Barcelona, Spain
[5] Univ Lleida, Hosp Univ Amau de Vilanova, Serv Cirugia Gen & Digest, Lleida, Spain
[6] Univ Autonoma Barcelona, Hosp Univ Parc Tauli, Serv Cirugia Gen & Digest, E-08193 Barcelona, Spain
[7] Univ Autonoma Barcelona, Hosp Univ Vail dHebron, Vail dHebron Res Inst Gen, E-08193 Barcelona, Spain
[8] Univ Autonoma Barcelona, Hosp Univ Vail dHebron, Gastrointestinal Surg Res Grp, E-08193 Barcelona, Spain