HEILONGJIANG NURSING JOURNAL, Volume 6, Issue 7,2000, Pages 77, doi:10.3760/cma.j.issn.1674-2907.2000.07.083
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HEILONGJIANG NURSING JOURNAL, Volume 6, Issue 7,2000, Pages 6-7, doi:10.3760/cma.j.issn.1674-2907.2000.07.006
HEILONGJIANG NURSING JOURNAL, Volume 6, Issue 7,2000, Pages 27, doi:10.3760/cma.j.issn.1674-2907.2000.07.027
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