NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 39,2009, Pages 2783-2785, doi:10.3760/cma.j.issn.0376-2491.2009.39.013
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 39,2009, Pages 2764-2767, doi:10.3760/cma.j.issn.0376-2491.2009.39.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 39,2009, Pages 2786-2788, doi:10.3760/cma.j.issn.0376-2491.2009.39.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 39,2009, Pages 2807-2808, doi:10.3760/cma.j.issn.0376-2491.2009.39.020
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 39,2009, Pages 2797-2801, doi:10.3760/cma.j.issn.0376-2491.2009.39.017