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INTERNATIONAL JOURNAL OF CEREBROVASCULAR DISEASES, Volume 17, Issue 3,2009, Pages 200-204, doi:10.3760/cma.j.issn.1673-4165.2009.03.009
INTERNATIONAL JOURNAL OF CEREBROVASCULAR DISEASES, Volume 17, Issue 3,2009, Pages 161-165, doi:10.3760/cma.j.issn.1673-4165.2009.03.001