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Chapman DP, Liu Y, Presley-Cantrell LR, Edwards VJ, Wheaton AG, Perry GS, Croft JB.Chapman DP, et al.BMC Public Health. 2013 Jan 3;13:3. doi: 10.1186/1471-2458-13-3.BMC Public Health. 2013.PMID: 23286392Free PMC article.
Liu Y, Croft JB, Wheaton AG, Perry GS, Chapman DP, Strine TW, McKnight-Eily LR, Presley-Cantrell L.Liu Y, et al. Among authors: chapman dp.BMC Public Health. 2013 Jan 29;13:84. doi: 10.1186/1471-2458-13-84.BMC Public Health. 2013.PMID: 23360346Free PMC article.
Chapman DP, Croft JB, Liu Y, Perry GS, Presley-Cantrell LR, Ford ES.Chapman DP, et al.J Environ Public Health. 2013;2013:259645. doi: 10.1155/2013/259645. Epub 2013 Feb 21.J Environ Public Health. 2013.PMID: 23509471Free PMC article.