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Sherwood NE, Crain AL, Martinson BC, Anderson CP, Hayes MG, Anderson JD, Senso MM, Jeffery RW.Sherwood NE, et al. Among authors: crain al.Prev Med. 2013 Mar;56(3-4):171-7. doi: 10.1016/j.ypmed.2012.12.014. Epub 2012 Dec 28.Prev Med. 2013.PMID: 23276775Free PMC article.Clinical Trial.