NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 24,2001, Pages 1523-1525, doi:10.3760/j:issn:0376-2491.2001.24.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 24,2001, Pages 1473-1474, doi:10.3760/j:issn:0376-2491.2001.24.001
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 24,2001, Pages 1532, doi:10.3760/j:issn:0376-2491.2001.24.022
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 24,2001, Pages 1504-1507, doi:10.3760/j:issn:0376-2491.2001.24.011