Chinese Journal of Preventive Medicine, Volume 47, Issue 2,2013, Pages 135-141, doi:10.3760/cma.j.issn.0253-9624.2013.02.009
Chinese Journal of Preventive Medicine, Volume 47, Issue 2,2013, Pages 124-128, doi:10.3760/cma.j.issn.0253-9624.2013.02.007
Chinese Journal of Preventive Medicine, Volume 47, Issue 2,2013, Pages 142-146, doi:10.3760/cma.j.issn.0253-9624.2013.02.010
Chinese Journal of Preventive Medicine, Volume 47, Issue 2,2013, Pages 179-182, doi:10.3760/cma.j.issn.0253-9624.2013.02.018