Table 1.

List of participating centres

Local PI	Local trial manager	Centre	Location
Paolo Millo	Elisa Ponte	AUSL Aosta–Surgical Unit–Parini Hospital	Aosta
Mario Morino	Massimiliano Mistrangelo	AOU Città Salute e Scienza–Academic Surgical Unit–Molinette Hospital	Torino
Paolo De Paolis	Mauro Santarelli	AOU Città Salute e Scienza–Surgical Unit–Molinette Hospital	Torino
Alessandro Ferrero	Paolo Massucco	AO Ordine Mauriziano–Surgical Unit–Umberto I Hospital (Coordineting centre)	Torino
Maurizio Degiuli	Rossella Reddavid	AOU S. Luigi Gonzaga–Academic Surgical Unit–S. Luigi Hospital	Orbassano (TO)
Roberto Saracco	Francesco Tomaselli	ASL Città Torino–Surgical Unit–Martini Hospital	Torino
Mauro Garino	Simone Birolo	ASL TO3–Surgical Unit–Infermi Hospital	Rivoli (TO)
Andrea Muratore	Marcello Calabrò	ASL TO3–Surgical Unit–Agnelli Hospital	Pinerolo (TO)
	Nicoletta Pipitone
Lodovico Rosato	Luca Panier Suffat	ASL TO4–Surgical Unit–Civile Hospital	Ivrea (TO)
Eraldo Personnettaz	Monica Carrera	ASL TO4–Surgical Unit–Ciriè Hospital	Ciriè (TO)
Pietro Cumbo	Francesco Potente	ASL TO5–Surgical Unit–S. Croce Hospital	Moncalieri (TO)
Felice Borghi	Maria Carmela Giuffrida	AO S. Croce e Carle–Surgical Unit–S. Croce Hospital	Cuneo
Franco Bertolino	Marco Brunetti	ASL CN1–Surgical Unit–SS. Annunziata Hospital	Savigliano (CN)
Andrea Gattolin	Roberto Rimonda	ASL CN1–Surgical Unit–Regina Montis Regalis Hospital	Mondovì (CN)
Marco Calgaro	Vincenzo Adamo	ASL CN2–Surgical Unit–S. Lazzaro Hospital	Alba (CN)
Fabio Priora	Igor Monsellato	AO SS. Antonio e Biagio e Cesare Arrigo-Surgical Unit–SS. Antonio e Biagio Hospital	Alessandria
	Domenico Piscioneri
Marco Amisano	Francesco Cravero	ASL AL–Surgical Unit–S. Spirito Hospital	Casale Monf.to (AL)
Alberto Serventi	Alberto Serventi	ASL AL–Surgical Unit–Mons. Galliano Hospital	Acqui Terme (AL)
Carmine Di Somma	Eliana Giaminardi	ASL AL–Surgical Unit–S. Giacomo Hospital	Novi Ligure (AL)
Vincenzo Sorisio	Luca Mazza	ASL AT–Surgical Unit–Cardinal Massaia Hospital	Asti
Sergio Gentilli	Paolo Bellora	AOU Maggiore Carità–Academic Surgical Unit–Maggiore Hospital	Novara
Raffaele Romito	Fabio Colli	AOU Maggiore Carità–Surgical Unit–Maggiore Hospital	Novara
Roberto Polastri	Roderto Perinotti	ASL BI–Surgical Unit–Infermi Hospital	Biella
Silvio Testa	Clemente De Rosa	ASL VC–Surgical Unit–S. Andrea Hospital	Vercelli
Sandro Zonta	Francesco Battafarano	ASL VCO–Surgical Unit – S. Biagio Hospital	Domodossola (VB)
	Renza Trapani	ASL VCO–Surgical Unit – Castelli Hospital	Verbania (VB)
Dario Ribero	Alfredo Mellano	FPO–Colorectal Surgical Unit – IRCCS	Candiolo (TO)
Renzo Leli	Paola Bellomo	Surgical Unit–Humanitas Gradenigo Hospital	Torino
Carlo Bima	Enrico Gibin	Surgical Unit–Cottolengo Hospital	Torino

PI, Principal Investigator.