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Berlin; Frankfurt am Main; Wien: Ullstein, 1970
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New York [u.a.]: Harper & Row, 1967
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Reinbek bei Hamburg: Rowohlt, 1970
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JSTOR, 1957
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Public Library of Science (PLoS), 2008
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JSTOR, 1958
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Elsevier BV, 1987
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XMLink, 2019
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Oxford University Press (OUP), 2023
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MDPI AG, 2023
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American Association for Cancer Research (AACR), 2007
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Springer Science and Business Media LLC, 2019
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Springer Science and Business Media LLC, 2018
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Wiley, 2012
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American Medical Association (AMA), 2022