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Berlin; Boston: De Gruyter, [2021] ; [Online-Ausgabe]
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Medical Journals Sweden AB, 1978
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Medical Journals Sweden AB, 1978
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BMJ, 1982
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BMJ, 1982
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Medical Journals Sweden AB, 1979
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Ovid Technologies (Wolters Kluwer Health), 1979
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SAGE Publications, 1990
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Hindawi Limited, 2009
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Hindawi Limited, 2009
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Wiley, 2008
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Elsevier BV, 1989
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Elsevier BV, 1989
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Elsevier BV, 1988
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SAGE Publications, 2001
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SAGE Publications, 2001
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Springer Science and Business Media LLC, 1989
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Springer Science and Business Media LLC, 2013
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SAGE Publications, 2008
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BMJ, 2006