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Baker PN, van der Meulen JH, Lewsey J, Gregg PJ; National Joint Registry for England and Wales.Baker PN, et al.J Bone Joint Surg Br. 2007 Jul;89(7):893-900. doi: 10.1302/0301-620X.89B7.19091.J Bone Joint Surg Br. 2007.PMID: 17673581Free article.