NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 13,2007, Pages 924-926, doi:10.3760/j:issn:0376-2491.2007.13.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 13,2007, Pages 889-893, doi:10.3760/j:issn:0376-2491.2007.13.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 13,2007, Pages 916-920, doi:10.3760/j:issn:0376-2491.2007.13.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 13,2007, Pages 906-908, doi:10.3760/j:issn:0376-2491.2007.13.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 13,2007, Pages 936, doi:10.3760/j:issn:0376-2491.2007.13.020