CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 23, Issue 5,2002, Pages 355-355, doi:10.3760/cma.j.issn.0254-6450.2002.05.112
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 23, Issue 5,2002, Pages 359-359, doi:10.3760/cma.j.issn.0254-6450.2002.05.114
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 23, Issue 5,2002, Pages 341-344, doi:10.3760/cma.j.issn.0254-6450.2002.05.108
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 23, Issue 5,2002, Pages 397-398, doi:10.3760/cma.j.issn.0254-6450.2002.05.130
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 23, Issue 5,2002, Pages 356-359, doi:10.3760/cma.j.issn.0254-6450.2002.05.113