Chinese Journal of Preventive Medicine, Volume 46, Issue 3,2012, Pages 241-245, doi:10.3760/cma.j.issn.0253-9624.2012.03.011
Chinese Journal of Preventive Medicine, Volume 46, Issue 3,2012, Pages 273-276, doi:10.3760/cma.j.issn.0253-9624.2012.03.017
Chinese Journal of Preventive Medicine, Volume 46, Issue 3,2012, Pages 237-240, doi:10.3760/cma.j.issn.0253-9624.2012.03.010
Chinese Journal of Preventive Medicine, Volume 46, Issue 3,2012, Pages 225-227, doi:10.3760/cma.j.issn.0253-9624.2012.03.007
Chinese Journal of Preventive Medicine, Volume 46, Issue 3,2012, Pages 280-281, doi:10.3760/cma.j.issn.0253-9624.2012.03.019