CHINESE JOURNAL OF ENDEMIOLOGY, Volume 26, Issue 5,2007, Pages 586, doi:10.3760/cma.j.issn.1000-4955.2007.05.042
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CHINESE JOURNAL OF ENDEMIOLOGY, Volume 26, Issue 5,2007, Pages 481-483, doi:10.3760/cma.j.issn.1000-4955.2007.05.004
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CHINESE JOURNAL OF ENDEMIOLOGY, Volume 26, Issue 5,2007, Pages 527-529, doi:10.3760/cma.j.issn.1000-4955.2007.05.017