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Bachlava E, Taylor CA, Tang S, Bowers JE, Mandel JR, Burke JM, Knapp SJ.Bachlava E, et al. Among authors: knapp sj.PLoS One. 2012;7(1):e29814. doi: 10.1371/journal.pone.0029814. Epub 2012 Jan 4.PLoS One. 2012.PMID: 22238659Free PMC article.