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Full text available at:
BMJ Journals
Available from 1925 volume: 1 until 2022 volume: 98.
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BMJ Journals Online Archive Free
Available from 1925 volume: 1 issue: 1 until 2005.
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Oxford University Press Journals Current
Available from 1996 volume: 72.
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PubMed Central
Available from 1925 volume: 1 until 2007 volume: 83.