NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 13,2002, Pages 879-882, doi:10.3760/j:issn:0376-2491.2002.13.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 13,2002, Pages 875-878, doi:10.3760/j:issn:0376-2491.2002.13.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 13,2002, Pages 883-886, doi:10.3760/j:issn:0376-2491.2002.13.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 13,2002, Pages 907-910, doi:10.3760/j:issn:0376-2491.2002.13.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 13,2002, Pages 933-934, doi:10.3760/j:issn:0376-2491.2002.13.022