Chinese Journal of Epidemiology, Volume 40, Issue 6,2019, Pages 660-665, doi:10.3760/cma.j.issn.0254-6450.2019.06.011
Chinese Journal of Epidemiology, Volume 40, Issue 6,2019, Pages 638-642, doi:10.3760/cma.j.issn.0254-6450.2019.06.007
Chinese Journal of Epidemiology, Volume 40, Issue 6,2019, Pages 731-738, doi:10.3760/cma.j.issn.0254-6450.2019.06.024
Chinese Journal of Epidemiology, Volume 40, Issue 6,2019, Pages 654-659, doi:10.3760/cma.j.issn.0254-6450.2019.06.010
Chinese Journal of Epidemiology, Volume 40, Issue 6,2019, Pages 726-730, doi:10.3760/cma.j.issn.0254-6450.2019.06.023