NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 22,2006, Pages 1526-1529, doi:10.3760/j:issn:0376-2491.2006.22.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 22,2006, Pages 1564-1567, doi:10.3760/j:issn:0376-2491.2006.22.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 22,2006, Pages 1549-1552, doi:10.3760/j:issn:0376-2491.2006.22.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 22,2006, Pages 1578-1581, doi:10.3760/j:issn:0376-2491.2006.22.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 22,2006, Pages 1558-1563, doi:10.3760/j:issn:0376-2491.2006.22.011