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Farrell MH, Christopher SA, Tluczek A, Kennedy-Parker K, La Pean A, Eskra K, Collins J, Hoffman G, Panepinto J, Farrell PM.Farrell MH, et al. Among authors: farrell pm.WMJ. 2011 Oct;110(5):221-7.WMJ. 2011.PMID: 22164579Free PMC article.