Chinese Journal of Epidemiology, Volume 36, Issue 8,2015, Pages 811-814, doi:10.3760/cma.j.issn.0254-6450.2015.08.009
Chinese Journal of Epidemiology, Volume 36, Issue 8,2015, Pages 862-866, doi:10.3760/cma.j.issn.0254-6450.2015.08.020
Chinese Journal of Epidemiology, Volume 36, Issue 8,2015, Pages 857-861, doi:10.3760/cma.j.issn.0254-6450.2015.08.019
Chinese Journal of Epidemiology, Volume 36, Issue 8,2015, Pages 786-789, doi:10.3760/cma.j.issn.0254-6450.2015.08.003
Chinese Journal of Epidemiology, Volume 36, Issue 8,2015, Pages 842-845, doi:10.3760/cma.j.issn.0254-6450.2015.08.016