NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 26,2010, Pages 1820-1823, doi:10.3760/cma.j.issn.0376-2491.2010.26.007
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NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 26,2010, Pages 1849-1853, doi:10.3760/cma.j.issn.0376-2491.2010.26.015
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 26,2010, Pages 1813-1815, doi:10.3760/cma.j.issn.0376-2491.2010.26.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 26,2010, Pages 1803, doi:10.3760/cma.j.issn.0376-2491.2010.26.002