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Full text available at:
BMJ Journals
Available from 1960 volume: 1 issue: 1.
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BMJ Journals Online Archive Free
Available from 1960 volume: 1 issue: 1 until 2005.
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Journals@Ovid
Available from 2000 volume: 47 issue: 6 until 2008 volume: 57 issue: 12.
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PubMed Central
Available from 1960 volume: 1 until 2007 volume: 56 issue: 12.