NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 23,2002, Pages 1609-1612, doi:10.3760/j:issn:0376-2491.2002.23.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 23,2002, Pages 1641-1644, doi:10.3760/j:issn:0376-2491.2002.23.017
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 23,2002, Pages 1613-1616, doi:10.3760/j:issn:0376-2491.2002.23.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 23,2002, Pages 1599-1603, doi:10.3760/j:issn:0376-2491.2002.23.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 23,2002, Pages 1617-1618, doi:10.3760/j:issn:0376-2491.2002.23.010