Chinese Journal of Preventive Medicine, Volume 46, Issue 4,2012, Pages 298,
Chinese Journal of Preventive Medicine, Volume 46, Issue 4,2012, Pages 348-351, doi:10.3760/cma.j.issn.0253-9624.2012.04.014
Chinese Journal of Preventive Medicine, Volume 46, Issue 4,2012, Pages 294-298, doi:10.3760/cma.j.issn.0253-9624.2012.04.002
Chinese Journal of Preventive Medicine, Volume 46, Issue 4,2012, Pages 367-369, doi:10.3760/cma.j.issn.0253-9624.2012.04.019
Chinese Journal of Preventive Medicine, Volume 46, Issue 4,2012, Pages 299-302, doi:10.3760/cma.j.issn.0253-9624.2012.04.003