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Arango-Lasprilla JC, Ketchum JM, Lewis AN, Krch D, Gary KW, Dodd BA Jr.Arango-Lasprilla JC, et al. Among authors: krch d.PM R. 2011 Dec;3(12):1083-91. doi: 10.1016/j.pmrj.2011.05.023. Epub 2011 Aug 26.PM R. 2011.PMID: 21872550