NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 9,2011, Pages 647-648, doi:10.3760/cma.j.issn.0376-2491.2011.09.021
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NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 9,2011, Pages 608-611, doi:10.3760/cma.j.issn.0376-2491.2011.09.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 9,2011, Pages 643-645, doi:10.3760/cma.j.issn.0376-2491.2011.09.019
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