CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 40, Issue 6,2006, Pages 447-449, doi:10.3760/j:issn:0253-9624.2006.06.017
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CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 40, Issue 6,2006, Pages 441-443, doi:10.3760/j:issn:0253-9624.2006.06.015
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 40, Issue 6,2006, Pages 444-446, doi:10.3760/j:issn:0253-9624.2006.06.016
CHINESE JOURNAL OF PREVENTIVE MEDICINE, Volume 40, Issue 6,2006, Pages 426, doi:10.3760/j:issn:0253-9624.2006.06.024