CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 1,2010, Pages 56-59, doi:10.3760/cma.j.issn.0254-6450.2010.01.014
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CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 1,2010, Pages 27-29, doi:10.3760/cma.j.issn.0254-6450.2010.01.007
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 1,2010, Pages 18-21, doi:10.3760/cma.j.issn.0254-6450.2010.01.005
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 1,2010, Pages 87-91, doi:10.3760/cma.j.issn.0254-6450.2010.01.021