Chinese Journal of Epidemiology, Volume 37, Issue 2,2016, Pages 268-272, doi:10.3760/cma.j.issn.0254-6450.2016.02.024
Chinese Journal of Epidemiology, Volume 37, Issue 2,2016, Pages 222-226, doi:10.3760/cma.j.issn.0254-6450.2016.02.015
Chinese Journal of Epidemiology, Volume 37, Issue 2,2016, Pages 197-201, doi:10.3760/cma.j.issn.0254-6450.2016.02.009
Chinese Journal of Epidemiology, Volume 37, Issue 2,2016, Pages 263-267, doi:10.3760/cma.j.issn.0254-6450.2016.02.023
Chinese Journal of Epidemiology, Volume 37, Issue 2,2016, Pages 232-237, doi:10.3760/cma.j.issn.0254-6450.2016.02.017