CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 6,2004, Pages 591-592, doi:10.3760/cma.j.issn.1000-4955.2004.06.027
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 6,2004, Pages 566-568, doi:10.3760/cma.j.issn.1000-4955.2004.06.018
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 6,2004, Pages 520-522, doi:10.3760/cma.j.issn.1000-4955.2004.06.003
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 6,2004, Pages 516-519, doi:10.3760/cma.j.issn.1000-4955.2004.06.002
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 23, Issue 6,2004, Pages 579-581, doi:10.3760/cma.j.issn.1000-4955.2004.06.023