CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 9,2006, Pages 827, doi:10.3760/j.issn:0254-6450.2006.09.030
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 9,2006, Pages 789-792, doi:10.3760/j.issn:0254-6450.2006.09.014
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 9,2006, Pages 780-784, doi:10.3760/j.issn:0254-6450.2006.09.012
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 9,2006, Pages 743, doi:10.3760/j.issn:0254-6450.2006.09.021
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 27, Issue 9,2006, Pages 773-776, doi:10.3760/j.issn:0254-6450.2006.09.010