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Manterola C, Otzen T, Urrutia S; MINCIR Group (Methodology and Research in Surgery).Manterola C, et al. Among authors: otzen t.Int J Surg. 2014;12(7):695-9. doi: 10.1016/j.ijsu.2014.05.063. Epub 2014 May 21.Int J Surg. 2014.PMID: 24859488Free article.