CHINESE JOURNAL OF ENDEMIOLOGY, Volume 20, Issue 6,2001, Pages 457-458, doi:10.3760/cma.j.issn.1000-4955.2001.06.021
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 20, Issue 6,2001, Pages 406-408, doi:10.3760/cma.j.issn.1000-4955.2001.06.003
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 20, Issue 6,2001, Pages 407-408, doi:10.3760/cma.j.issn.1000-4955.2001.06.007
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 20, Issue 6,2001, Pages 412-413, doi:10.3760/cma.j.issn.1000-4955.2001.06.005
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 20, Issue 6,2001, Pages 478-479, doi:10.3760/cma.j.issn.1000-4955.2001.06.034