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Edsberg LE, Crowgey EL, Osborn PM, Wyffels JT.Edsberg LE, et al. Among authors: wyffels jt.J Orthop Surg Res. 2017 May 4;12(1):69. doi: 10.1186/s13018-017-0567-2.J Orthop Surg Res. 2017.PMID: 28472996Free PMC article.