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BMJ Journals
Available from 1975 volume: 1 issue: 1.
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BMJ Journals Online Archive Free
Available from 1975 volume: 1 issue: 1 until 2005.
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PubMed Central
Available from 1975 volume: 1 until 2007 volume: 33 issue: 12.
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Social Science Premium Collection
Available from 01/04/1975.
Most recent 6 month(s) not available.