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München: Urban u. Vogel, 1987
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Springer Science and Business Media LLC, 1999
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Oxford University Press (OUP), 1990
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Oxford University Press (OUP), 1985
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BMJ, 1983
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BMJ, 1983
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Oxford University Press (OUP), 1985
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BMJ, 2012
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Elsevier BV, 2010
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Elsevier BV, 2008
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Springer Science and Business Media LLC, 1971
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Springer Science and Business Media LLC, 1971
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BMJ, 1970
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Oxford University Press (OUP), 1985
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Oxford University Press (OUP), 1985
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Oxford University Press (OUP), 1985
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British Medical Association, 1995
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BMJ, 1992
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BMJ, 1981
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British Medical Association, 1981