Chinese Journal of Epidemiology, Volume 34, Issue 3,2013, Pages 297-302, doi:10.3760/cma.j.issn.0254-6450.2013.03.021
Chinese Journal of Epidemiology, Volume 34, Issue 3,2013, Pages 205-209, doi:10.3760/cma.j.issn.0254-6450.2013.03.001
Chinese Journal of Epidemiology, Volume 34, Issue 3,2013, Pages 210-213, doi:10.3760/cma.j.issn.0254-6450.2013.03.002
Chinese Journal of Epidemiology, Volume 34, Issue 3,2013, Pages 267-272, doi:10.3760/cma.j.issn.0254-6450.2013.03.015
Chinese Journal of Epidemiology, Volume 34, Issue 3,2013, Pages 221-224, doi:10.3760/cma.j.issn.0254-6450.2013.03.005