NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 4,2008, Pages 230-232, doi:10.3321/j.issn:0376-2491.2008.04.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 4,2008, Pages 281-283, doi:10.3321/j.issn:0376-2491.2008.04.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 4,2008, Pages 276-278, doi:10.3321/j.issn:0376-2491.2008.04.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 4,2008, Pages 233-235, doi:10.3321/j.issn:0376-2491.2008.04.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 4,2008, Pages 240-244, doi:10.3321/j.issn:0376-2491.2008.04.007