- Publication venue
- Publication date
- 01/01/1980
- Field of study
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- Publication venue
- Publication date
- 01/01/1980
- Field of study
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- Publication venue
- Publication date
- 01/01/1980
- Field of study
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- Publication venue
- Publication date
- 01/01/1980
- Field of study
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- Publication venue
- 'BMJ'
- Publication date
- 01/01/1980
- Field of study
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- Publication venue
- Publication date
- 01/07/1987
- Field of study
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- Publication venue
- Publication date
- 01/07/1987
- Field of study
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- Publication venue
- Publication date
- 01/07/1987
- Field of study
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- Publication venue
- Publication date
- 01/01/1985
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- Publication venue
- Publication date
- 01/11/1988
- Field of study
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