NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 4,2010, Pages 269-271, doi:10.3760/cma.j.issn.0376-2491.2010.04.017
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NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 4,2010, Pages 259-263, doi:10.3760/cma.j.issn.0376-2491.2010.04.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 4,2010, Pages 256-258, doi:10.3760/cma.j.issn.0376-2491.2010.04.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 90, Issue 4,2010, Pages 220-221, doi:10.3760/cma.j.issn.0376-2491.2010.04.002