NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 47,2007, Pages 3367-3371, doi:10.3760/j.issn:0376-2491.2007.47.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 47,2007, Pages 3313-3316, doi:10.3760/j.issn:0376-2491.2007.47.001
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 47,2007, Pages 3335-3338, doi:10.3760/j.issn:0376-2491.2007.47.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 47,2007, Pages 3353-3356, doi:10.3760/j.issn:0376-2491.2007.47.011