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Ponkilainen VT, Partio N, Salonen EE, Riuttanen A, Luoma EL, Kask G, Laine HJ, Mäenpää H, Päiväniemi O, Mattila VM, Haapasalo HH.Ponkilainen VT, et al.Arch Orthop Trauma Surg. 2020 Oct;140(10):1423-1429. doi: 10.1007/s00402-020-03391-w. Epub 2020 Mar 5.Arch Orthop Trauma Surg. 2020.PMID: 32140830Free PMC article.