Chinese Journal of Epidemiology, Volume 33, Issue 11,2012, Pages 1101-1110, doi:10.3760/cma.j.issn.0254-6450.2012.11.001
Chinese Journal of Epidemiology, Volume 33, Issue 11,2012, Pages 1176-1180, doi:10.3760/cma.j.issn.0254-6450.2012.11.018
Chinese Journal of Epidemiology, Volume 33, Issue 11,2012, Pages 1123-1126, doi:10.3760/cma.j.issn.0254-6450.2012.11.005
Chinese Journal of Epidemiology, Volume 33, Issue 11,2012, Pages 1141-1143, doi:10.3760/cma.j.issn.0254-6450.2012.11.010
Chinese Journal of Epidemiology, Volume 33, Issue 11,2012, Pages 1198-1199, doi:10.3760/cma.j.issn.0254-6450.2012.11.025