NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 6,2003, Pages 504-509, doi:10.3760/j:issn:0376-2491.2003.06.017
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 6,2003, Pages 522-523, doi:10.3760/j:issn:0376-2491.2003.06.023
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 6,2003, Pages 526-528, doi:10.3760/j:issn:0376-2491.2003.06.025
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 6,2003, Pages 485-488, doi:10.3760/j:issn:0376-2491.2003.06.013
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 6,2003, Pages 455-458, doi:10.3760/j:issn:0376-2491.2003.06.005