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Nguyen-Oghalai TU, Kuo YF, Wu H, Shokar NK, Grecula M, Tincher S, Ottenbacher KJ.Nguyen-Oghalai TU, et al.South Med J. 2010 May;103(5):414-8. doi: 10.1097/SMJ.0b013e3181d7ba2f.South Med J. 2010.PMID: 20375948Free PMC article.