NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 2,2009, Pages 105-108, doi:10.3760/cma.j.issn.0376-2491.2009.02.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 2,2009, Pages 91-95, doi:10.3760/cma.j.issn.0376-2491.2009.02.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 2,2009, Pages 117-120, doi:10.3760/cma.j.issn.0376-2491.2009.02.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 2,2009, Pages 96-99, doi:10.3760/cma.j.issn.0376-2491.2009.02.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 2,2009, Pages 114-116, doi:10.3760/cma.j.issn.0376-2491.2009.02.011