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Li F, Liu Y, Lü J, Liang L, Harmer P.Li F, et al.J Epidemiol Community Health. 2015 Mar;69(3):201-4. doi: 10.1136/jech-2014-203892. Epub 2014 Jun 26.J Epidemiol Community Health. 2015.PMID: 24970766Free PMC article.No abstract available.
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