CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 7,2008, Pages 494-498, doi:10.3321/j.issn:0253-9624.2008.07.009
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 7,2008, Pages 485-488, doi:10.3321/j.issn:0253-9624.2008.07.007
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 7,2008, Pages 531-533, doi:10.3321/j.issn:0253-9624.2008.07.017
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 7,2008, Pages 502-505, doi:10.3321/j.issn:0253-9624.2008.07.011
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 42, Issue 7,2008, Pages 536-538, doi:10.3321/j.issn:0253-9624.2008.07.019