Chinese Journal of Epidemiology, Volume 36, Issue 3,2015, Pages 216-221, doi:10.3760/cma.j.issn.0254-6450.2015.03.006
Chinese Journal of Epidemiology, Volume 36, Issue 3,2015, Pages 293-296, doi:10.3760/cma.j.issn.0254-6450.2015.03.022
Chinese Journal of Epidemiology, Volume 36, Issue 3,2015, Pages 228-231, doi:10.3760/cma.j.issn.0254-6450.2015.03.008
Chinese Journal of Epidemiology, Volume 36, Issue 3,2015, Pages 259-264, doi:10.3760/cma.j.issn.0254-6450.2015.03.015
Chinese Journal of Epidemiology, Volume 36, Issue 3,2015, Pages 254-258, doi:10.3760/cma.j.issn.0254-6450.2015.03.014