NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 15,2001, Pages 941-942, doi:10.3760/j:issn:0376-2491.2001.15.015
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 15,2001, Pages 907-909, doi:10.3760/j:issn:0376-2491.2001.15.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 15,2001, Pages 960, doi:10.3760/j:issn:0376-2491.2001.15.026
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 15,2001, Pages 910-913, doi:10.3760/j:issn:0376-2491.2001.15.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 15,2001, Pages 927-930, doi:10.3760/j:issn:0376-2491.2001.15.011