CHINESE JOURNAL OF ENDEMIOLOGY, Volume 25, Issue 3,2006, Pages 297-299, doi:10.3760/cma.j.issn.1000-4955.2006.03.020
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CHINESE JOURNAL OF ENDEMIOLOGY, Volume 25, Issue 3,2006, Pages 237-238, doi:10.3760/cma.j.issn.1000-4955.2006.03.001
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 25, Issue 3,2006, Pages 257-259, doi:10.3760/cma.j.issn.1000-4955.2006.03.007