NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 13,2009, Pages 898-900, doi:10.3760/cma.j.issn.0376-2491.2009.13.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 13,2009, Pages 901-905, doi:10.3760/cma.j.issn.0376-2491.2009.13.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 13,2009, Pages 916-918, doi:10.3760/cma.j.issn.0376-2491.2009.13.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 13,2009, Pages 923-926, doi:10.3760/cma.j.issn.0376-2491.2009.13.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 13,2009, Pages 927-930, doi:10.3760/cma.j.issn.0376-2491.2009.13.017