NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 22,2011, Pages 1513-1515, doi:10.3760/cma.j.issn.0376-2491.2011.22.001
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NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 22,2011, Pages 1572-1574, doi:10.3760/cma.j.issn.0376-2491.2011.22.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 22,2011, Pages 1584, doi:10.3760/cma.j.issn.0376-2491.2011.22.023