Chinese Journal of Preventive Medicine, Volume 47, Issue 3,2013, Pages 199-201, doi:10.3760/cma.j.issn.0253-9624.2013.03.002
Chinese Journal of Preventive Medicine, Volume 47, Issue 3,2013, Pages 285-288, doi:10.3760/cma.j.issn.0253-9624.2013.03.022
Chinese Journal of Preventive Medicine, Volume 47, Issue 3,2013, Pages 233-237, doi:10.3760/cma.j.issn.0253-9624.2013.03.010
Chinese Journal of Preventive Medicine, Volume 47, Issue 3,2013, Pages 270-273, doi:10.3760/cma.j.issn.0253-9624.2013.03.017