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Mehdorn M, Petersen TO, Bartels M, Jansen-Winkeln B, Kassahun WT.Mehdorn M, et al. Among authors: kassahun wt.BMC Surg. 2016 Aug 11;16(1):55. doi: 10.1186/s12893-016-0169-7.BMC Surg. 2016.PMID: 27515528Free PMC article.Review.