NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 8,2007, Pages 520-525, doi:10.3760/j.issn:0376-2491.2007.08.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 8,2007, Pages 546-549, doi:10.3760/j.issn:0376-2491.2007.08.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 8,2007, Pages 573-575, doi:10.3760/j.issn:0376-2491.2007.08.019
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 8,2007, Pages 505-507, doi:10.3760/j.issn:0376-2491.2007.08.001
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 8,2007, Pages 559-561, doi:10.3760/j.issn:0376-2491.2007.08.015