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Koot VC, Kesselaer SM, Clevers GJ, de Hooge P, Weits T, van der Werken C.Koot VC, et al. Among authors: clevers gj.J Bone Joint Surg Br. 1996 Sep;78(5):831-4.J Bone Joint Surg Br. 1996.PMID: 8836082