NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 8,2003, Pages 644-646, doi:10.3760/j:issn:0376-2491.2003.08.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 8,2003, Pages 620-623, doi:10.3760/j:issn:0376-2491.2003.08.002
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 8,2003, Pages 658-661, doi:10.3760/j:issn:0376-2491.2003.08.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 8,2003, Pages 628-631, doi:10.3760/j:issn:0376-2491.2003.08.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 8,2003, Pages 696-698, doi:10.3760/j:issn:0376-2491.2003.08.022