CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 24, Issue 10,2003, Pages 959, doi:10.3760/j.issn:0254-6450.2003.10.044
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 24, Issue 10,2003, Pages 960, doi:10.3760/j.issn:0254-6450.2003.10.046
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 24, Issue 10,2003, Pages 871, doi:10.3760/j.issn:0254-6450.2003.10.028
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 24, Issue 10,2003, Pages 883-886, doi:10.3760/j.issn:0254-6450.2003.10.008
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 24, Issue 10,2003, Pages 867, doi:10.3760/j.issn:0254-6450.2003.10.027