NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 3,2009, Pages 183-186, doi:10.3760/cma.j.issn.0376-2491.2009.03.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 3,2009, Pages 175-178, doi:10.3760/cma.j.issn.0376-2491.2009.03.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 3,2009, Pages 179-182, doi:10.3760/cma.j.issn.0376-2491.2009.03.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 3,2009, Pages 210-212, doi:10.3760/cma.j.issn.0376-2491.2009.03.019