Chinese Journal of Preventive Medicine, Volume 45, Issue 10,2011, Pages 875-877, doi:10.3760/cma.j.issn.0253-9624.2011.10.004
Chinese Journal of Preventive Medicine, Volume 45, Issue 10,2011, Pages 924-928, doi:10.3760/cma.j.issn.0253-9624.2011.10.016
Chinese Journal of Preventive Medicine, Volume 45, Issue 10,2011, Pages 873-874, doi:10.3760/cma.j.issn.0253-9624.2011.10.003
Chinese Journal of Preventive Medicine, Volume 45, Issue 10,2011, Pages 881-885, doi:10.3760/cma.j.issn.0253-9624.2011.10.006
Chinese Journal of Preventive Medicine, Volume 45, Issue 10,2011, Pages 899-903, doi:10.3760/cma.j.issn.0253-9624.2011.10.010