Chinese Journal of Preventive Medicine, Volume 47, Issue 8,2013, Pages 680-683, doi:10.3760/cma.j.issn.0253-9624.2013.08.002
Chinese Journal of Preventive Medicine, Volume 47, Issue 8,2013, Pages 689-694, doi:10.3760/cma.j.issn.0253-9624.2013.08.005
Chinese Journal of Preventive Medicine, Volume 47, Issue 8,2013, Pages 684-685, doi:10.3760/cma.j.issn.0253-9624.2013.08.003
Chinese Journal of Preventive Medicine, Volume 47, Issue 8,2013, Pages 700-706, doi:10.3760/cma.j.issn.0253-9624.2013.08.007
Chinese Journal of Preventive Medicine, Volume 47, Issue 8,2013, Pages 761,