NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 9,2006, Pages 641-644, doi:10.3760/j:issn:0376-2491.2006.09.019
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 9,2006, Pages 632-635, doi:10.3760/j:issn:0376-2491.2006.09.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 9,2006, Pages 628-631, doi:10.3760/j:issn:0376-2491.2006.09.015
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 9,2006, Pages 581-583, doi:10.3760/j:issn:0376-2491.2006.09.003
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 86, Issue 9,2006, Pages 614-618, doi:10.3760/j:issn:0376-2491.2006.09.012