NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 21,2008, Pages 1441, doi:10.3321/j.issn:0376-2491.2008.21.001
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 21,2008, Pages 1488-1492, doi:10.3321/j.issn:0376-2491.2008.21.013
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 21,2008, Pages 1450-1453, doi:10.3321/j.issn:0376-2491.2008.21.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 21,2008, Pages 1503-1506, doi:10.3321/j.issn:0376-2491.2008.21.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 21,2008, Pages 1493-1497, doi:10.3321/j.issn:0376-2491.2008.21.014