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Zeber JE, Copeland LA, McCarthy JF, Bauer MS, Kilbourne AM.Zeber JE, et al. Among authors: copeland la.Am J Public Health. 2009 Apr;99(4):720-7. doi: 10.2105/AJPH.2007.131318. Epub 2009 Jan 15.Am J Public Health. 2009.PMID: 19150912Free PMC article.
Copeland LA, Zeber JE, Wang CP, Parchman ML, Lawrence VA, Valenstein M, Miller AL.Copeland LA, et al.BMC Health Serv Res. 2009 Jul 26;9:127. doi: 10.1186/1472-6963-9-127.BMC Health Serv Res. 2009.PMID: 19630997Free PMC article.