CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 32, Issue 1,2011, Pages 9-12, doi:10.3760/cma.j.issn.0254-6450.2011.01.003
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CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 32, Issue 1,2011, Pages 42-46, doi:10.3760/cma.j.issn.0254-6450.2011.01.011
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 32, Issue 1,2011, Pages 101-102, doi:10.3760/cma.j.issn.0254-6450.2011.01.028
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 32, Issue 1,2011, Pages 73-76, doi:10.3760/cma.j.issn.0254-6450.2011.01.017