Chinese Journal of Epidemiology, Volume 40, Issue 12,2019, Pages 1585-1589, doi:10.3760/cma.j.issn.0254-6450.2019.12.015
Chinese Journal of Epidemiology, Volume 40, Issue 12,2019, Pages 1578-1584, doi:10.3760/cma.j.issn.0254-6450.2019.12.014
Chinese Journal of Epidemiology, Volume 40, Issue 12,2019, Pages 1493-1498, doi:10.3760/cma.j.issn.0254-6450.2019.12.001
Chinese Journal of Epidemiology, Volume 40, Issue 12,2019, Pages 1569-1572, doi:10.3760/cma.j.issn.0254-6450.2019.12.012
Chinese Journal of Epidemiology, Volume 40, Issue 12,2019, Pages 1541-1547, doi:10.3760/cma.j.issn.0254-6450.2019.12.007