NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 34,2007, Pages 2405-2407, doi:10.3760/j.issn:0376-2491.2007.34.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 34,2007, Pages 2377-2379, doi:10.3760/j.issn:0376-2491.2007.34.001
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 34,2007, Pages 2379, doi:10.3760/j.issn:0376-2491.2007.34.021