CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 43, Issue 3,2009, Pages 182-186, doi:10.3760/cma.j.issn.0253-9624.2009.03.002
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 43, Issue 3,2009, Pages 242-244, doi:10.3760/cma.j.issn.0253-9624.2009.03.014
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 43, Issue 3,2009, Pages 215-222, doi:10.3760/cma.j.issn.0253-9624.2009.03.009
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 43, Issue 3,2009, Pages 250-252, doi:10.3760/cma.j.issn.0253-9624.2009.03.017