CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 4,2010, Pages 417-420, doi:10.3760/cma.j.issn.0254-6450.2010.04.013
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 4,2010, Pages 413-416, doi:10.3760/cma.j.issn.0254-6450.2010.04.012
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 4,2010, Pages 369-369,
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 4,2010, Pages 479-480, doi:10.3760/cma.j.issn.0254-6450.2010.04.033
CHINESE JOURNAL OF EPIDEMIOLOGY, Volume 31, Issue 4,2010, Pages 370-374, doi:10.3760/cma.j.issn.0254-6450.2010.04.003