NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 34,2008, Pages 2446, doi:10.3321/j.issn:0376-2491.2008.34.023
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 34,2008, Pages 2437-2440, doi:10.3321/j.issn:0376-2491.2008.34.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 34,2008, Pages 2432-2436, doi:10.3321/j.issn:0376-2491.2008.34.015
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 34,2008, Pages 2386, doi:10.3321/j.issn:0376-2491.2008.34.020