MATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 13,2001, Pages 776-778, doi:10.3760/j:issn:0376-2491.2001.13.004
MATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 13,2001, Pages 794-797, doi:10.3760/j:issn:0376-2491.2001.13.009
MATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 13,2001, Pages 788-791, doi:10.3760/j:issn:0376-2491.2001.13.007
MATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 13,2001, Pages 819-821, doi:10.3760/j:issn:0376-2491.2001.13.016
MATIONAL MEDICAL JOURNAL OF CHINA, Volume 81, Issue 13,2001, Pages 827-828, doi:10.3760/j:issn:0376-2491.2001.13.020