NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 44,2006, Pages 3161-3164, doi:10.3760/j:issn:0376-2491.2006.44.017
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 44,2006, Pages 3104-3108, doi:10.3760/j:issn:0376-2491.2006.44.003
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 44,2006, Pages 3138-3141, doi:10.3760/j:issn:0376-2491.2006.44.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 44,2006, Pages 3151-3153, doi:10.3760/j:issn:0376-2491.2006.44.013