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Peterson HA, Klassen RA, McLeod RA, Hoffman AD.Peterson HA, et al. Among authors: klassen ra.J Bone Joint Surg Br. 1981 Aug;63-B(2):198-208. doi: 10.1302/0301-620X.63B2.7217142.J Bone Joint Surg Br. 1981.PMID: 7217142