Chinese Journal of Preventive Medicine, Volume 47, Issue 5,2013, Pages 431-434, doi:10.3760/cma.j.issn.0253-9624.2013.05.011
Chinese Journal of Preventive Medicine, Volume 47, Issue 5,2013, Pages 427-430, doi:10.3760/cma.j.issn.0253-9624.2013.05.010
Chinese Journal of Preventive Medicine, Volume 47, Issue 5,2013, Pages 420-426, doi:10.3760/cma.j.issn.0253-9624.2013.05.009
Chinese Journal of Preventive Medicine, Volume 47, Issue 5,2013, Pages 448-451, doi:10.3760/cma.j.issn.0253-9624.2013.05.015
Chinese Journal of Preventive Medicine, Volume 47, Issue 5,2013, Pages 403-407, doi:10.3760/cma.j.issn.0253-9624.2013.05.006