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Catena F, Ansaloni L, Di Saverio S, Pinna AD; World Society of Emergency Surgery.Catena F, et al. Among authors: pinna ad.J Gastrointest Surg. 2012 Feb;16(2):382-8. doi: 10.1007/s11605-011-1736-y. Epub 2011 Nov 4.J Gastrointest Surg. 2012.PMID: 22052104Clinical Trial.