CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 28, Issue 12,2007, Pages 1189, doi:10.3760/j.issn:0254-6450.2007.12.023
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 28, Issue 12,2007, Pages 1179-1182, doi:10.3760/j.issn:0254-6450.2007.12.007
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 28, Issue 12,2007, Pages 1238-1239, doi:10.3760/j.issn:0254-6450.2007.12.022
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 28, Issue 12,2007, Pages 1183-1185, doi:10.3760/j.issn:0254-6450.2007.12.008
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 28, Issue 12,2007, Pages 1159-1161, doi:10.3760/j.issn:0254-6450.2007.12.002