CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 8,2006, Pages 689, doi:10.3760/j.issn:0254-6450.2006.08.024
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 8,2006, Pages 694-697, doi:10.3760/j.issn:0254-6450.2006.08.013
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 8,2006, Pages 705-708, doi:10.3760/j.issn:0254-6450.2006.08.016
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 8,2006, Pages 720, doi:10.3760/j.issn:0254-6450.2006.08.026
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 8,2006, Pages 664-668, doi:10.3760/j.issn:0254-6450.2006.08.006