NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 25,2006, Pages 1759-1763, doi:10.3760/j:issn:0376-2491.2006.25.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 25,2006, Pages 1737-1739, doi:10.3760/j:issn:0376-2491.2006.25.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 25,2006, Pages 1783-1786, doi:10.3760/j:issn:0376-2491.2006.25.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 25,2006, Pages 1794-1798, doi:10.3760/j:issn:0376-2491.2006.25.019
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 25,2006, Pages 1778-1780, doi:10.3760/j:issn:0376-2491.2006.25.014