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Bibliography:local:postgradmedj;54/633/462
ark:/67375/NVC-NX2N8LVK-Q
PMID:100776
href:postgradmedj-54-462.pdf
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ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0032-5473
1469-0756
DOI:10.1136/pgmj.54.633.462