NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 23,2006, Pages 1610-1614, doi:10.3760/j:issn:0376-2491.2006.23.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 23,2006, Pages 1615-1619, doi:10.3760/j:issn:0376-2491.2006.23.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 23,2006, Pages 1638-1643, doi:10.3760/j:issn:0376-2491.2006.23.013
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 23,2006, Pages 1600-1603, doi:10.3760/j:issn:0376-2491.2006.23.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 23,2006, Pages 1592-1596, doi:10.3760/j:issn:0376-2491.2006.23.003