Chinese Journal of Preventive Medicine, Volume 46, Issue 8,2012, Pages 764-765, doi:10.3760/cma.j.issn.0253-9624.2012.08.022
Chinese Journal of Preventive Medicine, Volume 46, Issue 8,2012, Pages 766-767, doi:10.3760/cma.j.issn.0253-9624.2012.08.023
Chinese Journal of Preventive Medicine, Volume 46, Issue 8,2012, Pages 740-744, doi:10.3760/cma.j.issn.0253-9624.2012.08.015
Chinese Journal of Preventive Medicine, Volume 46, Issue 8,2012, Pages 708-712, doi:10.3760/cma.j.issn.0253-9624.2012.08.008
Chinese Journal of Preventive Medicine, Volume 46, Issue 8,2012, Pages 750-753, doi:10.3760/cma.j.issn.0253-9624.2012.08.017