Chinese Journal of Epidemiology, Volume 40, Issue 9,2019, Pages 1139-1144, doi:10.3760/cma.j.issn.0254-6450.2019.09.023
Chinese Journal of Epidemiology, Volume 40, Issue 9,2019, Pages 1111-1115, doi:10.3760/cma.j.issn.0254-6450.2019.09.017
Chinese Journal of Epidemiology, Volume 40, Issue 9,2019, Pages 1089-1094, doi:10.3760/cma.j.issn.0254-6450.2019.09.013
Chinese Journal of Epidemiology, Volume 40, Issue 9,2019, Pages 1145-1149, doi:10.3760/cma.j.issn.0254-6450.2019.09.024
Chinese Journal of Epidemiology, Volume 40, Issue 9,2019, Pages 1120-1124, doi:10.3760/cma.j.issn.0254-6450.2019.09.019