CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 4,2008, Pages 221-225, doi:10.3321/j.issn:0253-9624.2008.04.002
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 4,2008, Pages 283-285, doi:10.3321/j.issn:0253-9624.2008.04.019
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 4,2008, Pages 275-277, doi:10.3321/j.issn:0253-9624.2008.04.014
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 4,2008, Pages 264-267, doi:10.3321/j.issn:0253-9624.2008.04.011
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 4,2008, Pages 226-230, doi:10.3321/j.issn:0253-9624.2008.04.003