CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 25, Issue 1,2004, Pages 87, doi:10.3760/j.issn:0254-6450.2004.01.034
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CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 25, Issue 1,2004, Pages 85-86, doi:10.3760/j.issn:0254-6450.2004.01.032
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 25, Issue 1,2004, Pages 58-59, doi:10.3760/j.issn:0254-6450.2004.01.018
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 25, Issue 1,2004, Pages 23-26, doi:10.3760/j.issn:0254-6450.2004.01.008