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Engh CA, Bobyn JD, Glassman AH.Engh CA, et al. Among authors: bobyn jd.J Bone Joint Surg Br. 1987 Jan;69(1):45-55. doi: 10.1302/0301-620X.69B1.3818732.J Bone Joint Surg Br. 1987.PMID: 3818732
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