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Ploeger MM, Groezinger A, Randau TM, Friedrich MJ, Wirtz DC, Gravius S, Wimmer MD.Ploeger MM, et al. Among authors: friedrich mj.Z Orthop Unfall. 2016 Oct;154(5):521-523. doi: 10.1055/s-0042-105766. Epub 2016 Jun 13.Z Orthop Unfall. 2016.PMID: 27294483Clinical Trial.German.