Chinese Journal of Epidemiology, Volume 39, Issue 2,2018, Pages 157-164, doi:10.3760/cma.j.issn.0254-6450.2018.02.005
Chinese Journal of Epidemiology, Volume 39, Issue 2,2018, Pages 249-252, doi:10.3760/cma.j.issn.0254-6450.2018.02.022
Chinese Journal of Epidemiology, Volume 39, Issue 2,2018, Pages 111-138, doi:10.3760/cma.j.issn.0254-6450.2018.02.001
Chinese Journal of Epidemiology, Volume 39, Issue 2,2018, Pages 173-178, doi:10.3760/cma.j.issn.0254-6450.2018.02.007
Chinese Journal of Epidemiology, Volume 39, Issue 2,2018, Pages 204-207, doi:10.3760/cma.j.issn.0254-6450.2018.02.013