NATIONAL MEDICAL JOURNAL OF CHINA, Volume 78, Issue 10,1998, , doi:10.3760/j:issn:0376-2491.1998.10.002
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 78, Issue 10,1998, , doi:10.3760/j:issn:0376-2491.1998.10.021
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 78, Issue 10,1998, , doi:10.3760/j:issn:0376-2491.1998.10.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 78, Issue 10,1998, , doi:10.3760/j:issn:0376-2491.1998.10.025
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 78, Issue 10,1998, , doi:10.3760/j:issn:0376-2491.1998.10.004