Erratum to: Langenbecks Arch Surg (2014) 399(3):253–62

DOI 10.1007/s00423-014-1178-6

The original version of this article by Diener et al. unfortunately contained an error concerning table 1 (page 260). For all recruiting trials, in which Cologne was named as University of Principal Investigator, should be correctly stated Witten/Herdecke.