NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 44,2009, Pages 3163-3166, doi:10.3760/cma.j.issn.0376-2491.2009.44.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 44,2009, Pages 3147-3150, doi:10.3760/cma.j.issn.0376-2491.2009.44.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 44,2009, Pages 3143-3146, doi:10.3760/cma.j.issn.0376-2491.2009.44.013
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 44,2009, Pages 3151-3155, doi:10.3760/cma.j.issn.0376-2491.2009.44.015
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 44,2009, Pages 3156-3159, doi:10.3760/cma.j.issn.0376-2491.2009.44.016