CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 5,2006, Pages 405, doi:10.3760/j.issn:0254-6450.2006.05.025
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CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 5,2006, Pages 387-391, doi:10.3760/j.issn:0254-6450.2006.05.006
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 5,2006, Pages 379-383, doi:10.3760/j.issn:0254-6450.2006.05.004
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 5,2006, Pages 396-398, doi:10.3760/j.issn:0254-6450.2006.05.008