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Springer BD, Odum SM, Nagpal VS, Lombardi AV Jr, Berend KR, Kim RH, Dennis DA.Springer BD, et al.Orthop Clin North Am. 2012 Nov;43(5):e1-7. doi: 10.1016/j.ocl.2012.07.001.Orthop Clin North Am. 2012.PMID: 23102415