CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 5,2004, Pages 410-411, doi:10.3760/cma.j.issn.1000-4955.2004.05.006
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CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 5,2004, Pages 400-402, doi:10.3760/cma.j.issn.1000-4955.2004.05.003
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 5,2004, Pages 479-481, doi:10.3760/cma.j.issn.1000-4955.2004.05.030
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 5,2004, Pages 420-422, doi:10.3760/cma.j.issn.1000-4955.2004.05.010