NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 9,2002, Pages 637-639, doi:10.3760/j:issn:0376-2491.2002.09.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 9,2002, Pages 610-612, doi:10.3760/j:issn:0376-2491.2002.09.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 9,2002, Pages 578-579, doi:10.3760/j:issn:0376-2491.2002.09.002
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 9,2002, Pages 606-609, doi:10.3760/j:issn:0376-2491.2002.09.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 9,2002, Pages 580-582, doi:10.3760/j:issn:0376-2491.2002.09.003