Chinese Journal of Epidemiology, Volume 39, Issue 5,2018, Pages 686-688, doi:10.3760/cma.j.issn.0254-6450.2018.05.029
Chinese Journal of Epidemiology, Volume 39, Issue 5,2018, Pages 664-668, doi:10.3760/cma.j.issn.0254-6450.2018.05.024
Chinese Journal of Epidemiology, Volume 39, Issue 5,2018, Pages 580-585, doi:10.3760/cma.j.issn.0254-6450.2018.05.008
Chinese Journal of Epidemiology, Volume 39, Issue 5,2018, Pages 678-681, doi:10.3760/cma.j.issn.0254-6450.2018.05.027