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Lightfoot M, Comulada WS, Stover G.Lightfoot M, et al. Among authors: stover g.Am J Public Health. 2007 Jun;97(6):1027-30. doi: 10.2105/AJPH.2005.072652. Epub 2006 May 2.Am J Public Health. 2007.PMID: 16670219Free PMC article.