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London [u.a.]: W. B. Saunders, 19XX-
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London [u.a.]: Saunders, 1976
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Dordrecht [u.a.]: Kluwer Academic Publ., 1988
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SAGE Publications, 1998
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BMJ, 1995
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Elsevier BV, 1987
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BMJ, 1986
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BMJ, 1986
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BMJ, 1985
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British Medical Association, 1985
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BMJ, 1984
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BMJ, 1983
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British Medical Association, 1983
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BMJ, 1983
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SAGE Publications, 1982
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BMJ, 1982
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BMJ, 1982
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BMJ, 1980
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BMJ, 1979
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BMJ, 1978