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Ottenbacher KJ, Graham JE, Al Snih S, Raji M, Samper-Ternent R, Ostir GV, Markides KS.Ottenbacher KJ, et al. Among authors: ostir gv.Am J Public Health. 2009 Apr;99(4):673-9. doi: 10.2105/AJPH.2008.143958. Epub 2009 Feb 5.Am J Public Health. 2009.PMID: 19197079Free PMC article.