NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 21,2011, Pages 1466, doi:10.3760/cma.j.issn.0376-2491.2011.21.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 21,2011, Pages 1452,1470,1478,1489,1508,1512,
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NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 21,2011, Pages 1467-1470, doi:10.3760/cma.j.issn.0376-2491.2011.21.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 21,2011, Pages 1485, doi:10.3760/cma.j.issn.0376-2491.2011.21.012