- Publication venue
- BMJ
- Publication date
- 01/01/2007
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- Publication venue
- Springer Science and Business Media LLC
- Publication date
- 01/11/1993
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- Publication venue
- Elsevier BV
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- 01/07/1995
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- Publication venue
- Springer Science and Business Media LLC
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- 01/01/1995
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- Elsevier BV
- Publication date
- 01/07/1992
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- Oxford University Press (OUP)
- Publication date
- 01/07/1978
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