CHINESE JOURNAL OF ENDEMIOLOGY, Volume 22, Issue 4,2003, Pages 339-341, doi:10.3760/cma.j.issn.1000-4955.2003.04.017
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 22, Issue 4,2003, Pages 367-369, doi:10.3760/cma.j.issn.1000-4955.2003.04.029
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 22, Issue 4,2003, Pages 351-352, doi:10.3760/cma.j.issn.1000-4955.2003.04.022
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 22, Issue 4,2003, Pages 384-384, doi:10.3760/cma.j.issn.1000-4955.2003.04.045
CHINESE JOURNAL OF ENDEMIOLOGY, Volume 22, Issue 4,2003, Pages 347-348, doi:10.3760/cma.j.issn.1000-4955.2003.04.020