Chinese Journal of Preventive Medicine, Volume 46, Issue 6,2012, Pages 505-509, doi:10.3760/cma.j.issn.0253-9624.2012.06.006
Chinese Journal of Preventive Medicine, Volume 46, Issue 6,2012, Pages 542,
Chinese Journal of Preventive Medicine, Volume 46, Issue 6,2012, Pages 575-576, doi:10.3760/cma.j.issn.0253-9624.2012.06.022
Chinese Journal of Preventive Medicine, Volume 46, Issue 6,2012, Pages 488-491, doi:10.3760/cma.j.issn.0253-9624.2012.06.002
Chinese Journal of Preventive Medicine, Volume 46, Issue 6,2012, Pages 551-555, doi:10.3760/cma.j.issn.0253-9624.2012.06.016