Chinese Journal of Preventive Medicine, Volume 48, Issue 6,2014, Pages 521-526, doi:10.3760/cma.j.issn.0253-9624.2014.06.019
Chinese Journal of Preventive Medicine, Volume 48, Issue 6,2014, Pages 532-534, doi:10.3760/cma.j.issn.0253-9624.2014.06.022
Chinese Journal of Preventive Medicine, Volume 48, Issue 6,2014, Pages 466-470, doi:10.3760/cma.j.issn.0253-9624.2014.06.009
Chinese Journal of Preventive Medicine, Volume 48, Issue 6,2014, Pages 451-455, doi:10.3760/cma.j.issn.0253-9624.2014.06.006
Chinese Journal of Preventive Medicine, Volume 48, Issue 6,2014, Pages 517-520, doi:10.3760/cma.j.issn.0253-9624.2014.06.018