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Genuis SJ, Schwalfenberg GK, Hiltz MN, Vaselenak SA.Genuis SJ, et al.Int J Environ Res Public Health. 2009 Jan;6(1):151-73. doi: 10.3390/ijerph6010151. Epub 2009 Jan 7.Int J Environ Res Public Health. 2009.PMID: 19440275Free PMC article.