CHINESE JOURNAL OF PRACTICAL NURSING, Volume 22, Issue 20,2006, Pages 73-75, doi:10.3760/cma.j.issn.1672-7088.2006.20.042
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CHINESE JOURNAL OF PRACTICAL NURSING, Volume 22, Issue 20,2006, Pages 8-10, doi:10.3760/cma.j.issn.1672-7088.2006.20.004
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