NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 14,2001, Pages 833-835, doi:10.3760/j:issn:0376-2491.2001.14.001
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 14,2001, Pages 855, doi:10.3760/j:issn:0376-2491.2001.14.022
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 14,2001, Pages 871-875, doi:10.3760/j:issn:0376-2491.2001.14.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 14,2001, Pages 895-896, doi:10.3760/j:issn:0376-2491.2001.14.024
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 14,2001, Pages 891-892, doi:10.3760/j:issn:0376-2491.2001.14.020