Chinese Journal of Epidemiology, Volume 34, Issue 12,2013, Pages 1173-1175, doi:10.3760/cma.j.issn.0254-6450.2013.012.004
Chinese Journal of Epidemiology, Volume 34, Issue 12,2013, Pages 1219-1222, doi:10.3760/cma.j.issn.0254-6450.2013.012.015
Chinese Journal of Epidemiology, Volume 34, Issue 12,2013, Pages 1179-1182, doi:10.3760/cma.j.issn.0254-6450.2013.012.006
Chinese Journal of Epidemiology, Volume 34, Issue 12,2013, Pages 1250-1254, doi:10.3760/cma.j.issn.0254-6450.2013.012.022
Chinese Journal of Epidemiology, Volume 34, Issue 12,2013, Pages 1159-1163, doi:10.3760/cma.j.issn.0254-6450.2013.012.001