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Oxford: Blackwell [u.a.], 1985
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BMJ, 1995
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Elsevier BV, 1991
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BMJ, 1997
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BMJ, 1996
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Elsevier BV, 1987
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British Medical Association, 1993
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BMJ, 1993
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SAGE Publications, 2024
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Oxford University Press (OUP), 2013
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BMJ, 1996
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Elsevier BV, 1970
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BMJ, 1995
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British Medical Association, 1995
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British Medical Association, 1993
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BMJ, 1993
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Elsevier BV, 1995
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Elsevier BV, 1994
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American Society for Microbiology, 1978
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Elsevier BV, 1996