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Wolfe CM, Cohen B, Larson E.Wolfe CM, et al.J Infect Public Health. 2014 May-Jun;7(3):224-32. doi: 10.1016/j.jiph.2014.01.001. Epub 2014 Mar 13.J Infect Public Health. 2014.PMID: 24631369Free PMC article.