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Graham AL, Abrams DB.Graham AL, et al. Among authors: abrams db.J Med Internet Res. 2005 Jul 1;7(3):e26. doi: 10.2196/jmir.7.3.e26.J Med Internet Res. 2005.PMID: 15998617Free PMC article.
Levy DT, Mabry PL, Graham AL, Orleans CT, Abrams DB.Levy DT, et al. Among authors: abrams db.Am J Public Health. 2010 Jul;100(7):1253-9. doi: 10.2105/AJPH.2009.166785. Epub 2010 May 13.Am J Public Health. 2010.PMID: 20466969Free PMC article.