CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 41, Issue 6,2007, Pages 483-486, doi:10.3760/j.issn:0253-9624.2007.06.014
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 41, Issue 6,2007, Pages 475-478, doi:10.3760/j.issn:0253-9624.2007.06.012
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 41, Issue 6,2007, Pages 453-457, doi:10.3760/j.issn:0253-9624.2007.06.007
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 41, Issue 6,2007, Pages 499-501, doi:10.3760/j.issn:0253-9624.2007.06.018
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 41, Issue 6,2007, Pages 449-452, doi:10.3760/j.issn:0253-9624.2007.06.006