NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 5,2009, Pages 325-327, doi:10.3760/cma.j.issn.0376-2491.2009.05.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 5,2009, Pages 347-351, doi:10.3760/cma.j.issn.0376-2491.2009.05.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 5,2009, Pages 314-317, doi:10.3760/cma.j.issn.0376-2491.2009.05.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 5,2009, Pages 355-356, doi:10.3760/cma.j.issn.0376-2491.2009.05.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 5,2009, Pages 291-295, doi:10.3760/cma.j.issn.0376-2491.2009.05.002