CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 26, Issue 6,2005, Pages 448-450, doi:10.3760/j.issn:0254-6450.2005.06.016
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 26, Issue 6,2005, Pages 466, doi:10.3760/j.issn:0254-6450.2005.06.028
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 26, Issue 6,2005, Pages 424-427, doi:10.3760/j.issn:0254-6450.2005.06.010
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 26, Issue 6,2005, Pages 468, doi:10.3760/j.issn:0254-6450.2005.06.030
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 26, Issue 6,2005, Pages 439, doi:10.3760/j.issn:0254-6450.2005.06.026