NATIONAL MEDICAL JOURNAL OF CHINA, Volume 84, Issue 24,2004, Pages 2077-2081, doi:10.3760/j:issn:0376-2491.2004.24.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 84, Issue 24,2004, Pages 2107-2109, doi:10.3760/j:issn:0376-2491.2004.24.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 84, Issue 24,2004, Pages 2073-2076, doi:10.3760/j:issn:0376-2491.2004.24.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 84, Issue 24,2004, Pages 2117-2119, doi:10.3760/j:issn:0376-2491.2004.24.017
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 84, Issue 24,2004, Pages 2142-2143, doi:10.3760/j:issn:0376-2491.2004.24.025