MODERN NURSING, Volume 9, Issue 8,2003, Pages 577-578, doi:10.3760/cma.j.issn.1674-2907.2003.08.001
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MODERN NURSING, Volume 9, Issue 8,2003, Pages 644-644, doi:10.3760/cma.j.issn.1674-2907.2003.08.047
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