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Bibliography:local:bmj;298/6678/931
istex:54C22D8E120A0B8841FD8C1FB43DD95130B29CF8
ark:/67375/NVC-CTFLMCK1-Q
PMID:2497864
href:bmj-298-931.pdf
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SourceType-Scholarly Journals-1
ObjectType-Feature-1
ObjectType-News-3
content type line 23
ISSN:0959-8138
1468-5833
1756-1833
DOI:10.1136/bmj.298.6678.931