NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 6,2007, Pages 423-426, doi:10.3760/j:issn:0376-2491.2007.06.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 6,2007, Pages 388-391, doi:10.3760/j:issn:0376-2491.2007.06.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 6,2007, Pages 375-378, doi:10.3760/j:issn:0376-2491.2007.06.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 6,2007, Pages 383-387, doi:10.3760/j:issn:0376-2491.2007.06.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 6,2007, Pages 409-413, doi:10.3760/j:issn:0376-2491.2007.06.013