Chinese Journal of Epidemiology, Volume 40, Issue 5,2019, Pages 510-514, doi:10.3760/cma.j.issn.0254-6450.2019.05.004
Chinese Journal of Epidemiology, Volume 40, Issue 5,2019, Pages 601-604, doi:10.3760/cma.j.issn.0254-6450.2019.05.021
Chinese Journal of Epidemiology, Volume 40, Issue 5,2019, Pages 596-600, doi:10.3760/cma.j.issn.0254-6450.2019.05.020
Chinese Journal of Epidemiology, Volume 40, Issue 5,2019, Pages 526-530, doi:10.3760/cma.j.issn.0254-6450.2019.05.007
Chinese Journal of Epidemiology, Volume 40, Issue 5,2019, Pages 580-584, doi:10.3760/cma.j.issn.0254-6450.2019.05.017