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Oxford: Oxford University Press, 2005
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BMJ, 2015
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BMJ Publishing Group, 2015
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Wiley, 2012
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British Medical Association, 2009
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Elsevier BV, 2009
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Elsevier BV, 2009
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Equinox Publishing, 2005
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Informa UK Limited, 2001
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SAGE Publications, 1998
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SAGE Publications, 1990
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British Medical Association, 1986
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British Medical Association, 1985
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Wiley, 2021
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SAGE Publications, 2017
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SAGE Publications, 1999
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Elsevier BV, 1999
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British Medical Association, 1986
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British Medical Association, 2008
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BMJ, 2008