Chinese Journal of Epidemiology, Volume 35, Issue 2,2014, Pages 138-141, doi:10.3760/cma.j.issn.0254-6450.2014.02.008
Chinese Journal of Epidemiology, Volume 35, Issue 2,2014, Pages 195-199, doi:10.3760/cma.j.issn.0254-6450.2014.02.021
Chinese Journal of Epidemiology, Volume 35, Issue 2,2014, Pages 205-207, doi:10.3760/cma.j.issn.0254-6450.2014.02.023
Chinese Journal of Epidemiology, Volume 35, Issue 2,2014, Pages 114-116, doi:10.3760/cma.j.issn.0254-6450.2014.02.002
Chinese Journal of Epidemiology, Volume 35, Issue 2,2014, Pages 215-217, doi:10.3760/cma.j.issn.0254-6450.2014.02.026