[1] Univ Turin, San Luigi Univ Hosp, Dept Oncol, Div Surg Oncol, Turin, Italy
[2] Clin Chirurg Univ Politecn Marche, Osped Riuniti, Ancona, Italy
[3] Univ Turin, Dept Oncol, BSIT, Turin, Italy
[4] S Croce & Carle Hosp, Dept Surg, Cuneo, Italy
[5] Azienda Osped Univ, Dept Gen & Emergency Surg, Citta Salute & Sci, Turin, Italy
[6] Fdn Giovanni Pascale IRCCS, Abdominal Oncol Dept, Colorectal Surg Oncol, Naples, Italy
[7] Humanitas Clin & Res Ctr, Colon & Rectal Surg Div, Via Alessandro Manzoni 56, I-20089 Milan, Italy
[8] Univ Vita Salute San Raffaele, San Raffaele Hosp, Div Gastrointestinal Surg, I-20132 Milan, Italy
[9] Azienda Osped Univ Modena, Unita Operat Chirurg Gen Urgenza & Nuove Tecnol, OCSAE, Modena, Italy
[10] Univ Naples Federico II, Dept Clin Med & Surg, Dept Gastroenterol Endocrinol & Endoscop Surg, Naples, Italy
[11] Santa Maria Misericordia Hosp, Gen Surg Unit, Rovigo, Italy
[12] Osped S Andrea Vercelli, SC Chirurg Gen, Vercelli, Italy
[13] Univ Cagliari, Dipartimento Sci Chirurg, Chirurg Coloproctol AOU Cagliari, Cagliari, Italy
[14] Osped S Eugenio, UOC Chirurg Gen, Piazzale Umanesimo 10, I-00144 Rome, Italy
[15] ASST NORD MILANO, Unita Operat Complessa Chirurg Gen, PO SSG, Milan, Italy
[16] IRCCS Policlin San Martino, Surg Oncol Surg, Genoa, Italy
[17] Umberto I Mauriziano Hosp, Dept Gen & Oncol Surg, Turin, Italy
[18] AOU Maggiore Carita Hosp, Gen Surg Dept, SCDU Clin Chirurg, Novara, Italy
[19] Univ Padua, Dept Surg Oncol & Gastroenterol Sci, Padua, Italy
[20] Hosp Biella, Dept Surg, Gen Surg Unit, Biella, Italy
[21] AOU Ferrara, Dept Surg Morphol & Expt Med, Ferrara, Italy
[22] Valli Noce Hosp, Prov Agcy Hlth Serv APSS, Gen Surg Div, Trento, Italy
[23] Osped San Raffaele, Gastrointestinal Surg, I-20132 Milan, Italy
[24] Univ Milan, Div Gen & Robot Surg, Dipartimento Sci Salute, I-20142 Milan, Italy
[25] ASL NA3sud, Gen Surg Unit, San Leonardo Hosp, Naples, Italy
[26] Fdn Policlin Gemelli, Area Chirurg Addominale, IRCCS, Rome, Italy
[27] Edoardo Agnelli Hosp, Surg Dept, Pinerolo, Italy
[28] Univ Siena, UOC Gen & Oncol Surg, Siena, Italy
[29] Ausl Romagna, Gen & Oncol Surg, Morgagni Pierantoni Hosp, Forli, Italy
[30] Fdn Policlin Univ Gemelli, Chirurg Gen Presidio Columbus, IRCCS, Rome, Italy
[31] Osped San Camillo, UOC Chirurg, Trento, Italy
[32] Misericordia Hosp, Dept Surg, Grosseto, Italy
[33] Natl Canc Inst, Dept Surg Oncol, IRCCS, CRO Aviano, Aviano, Italy
[34] Humanitas Clin & Res Ctr, Via Alessandro Manzoni 56, I-20089 Milan, Italy
[35] Humanitas Univ, Dept Biomed Sci, Milan, Italy
[36] Candiolo Canc Inst FPO IRCCS, Oncol Surg, I-10060 Turin, Italy
[37] Univ Torino, San Luigi Univ Hosp, Dept Oncol Head Surg Oncol & Digest Surg, Reg Gonzole 10 Orbassano, I-10043 Turin, Italy