NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 9,2007, Pages 614-618, doi:10.3760/j:issn:0376-2491.2007.09.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 9,2007, Pages 585-589, doi:10.3760/j:issn:0376-2491.2007.09.003
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 9,2007, Pages 634-636, doi:10.3760/j:issn:0376-2491.2007.09.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 9,2007, Pages 611-613, doi:10.3760/j:issn:0376-2491.2007.09.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 9,2007, Pages 594-598, doi:10.3760/j:issn:0376-2491.2007.09.005