Chinese Journal of Endemiology, Volume 20, Issue 1,2001, Pages 39-40, doi:10.3760/cma.j.issn.1000-4955.2001.01.015
Chinese Journal of Endemiology, Volume 20, Issue 1,2001, Pages 1-4,
Chinese Journal of Endemiology, Volume 20, Issue 1,2001, Pages 28-30, doi:10.3760/cma.j.issn.1000-4955.2001.01.011
Chinese Journal of Endemiology, Volume 20, Issue 1,2001, Pages 5-8, doi:10.3760/cma.j.issn.1000-4955.2001.01.002