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München; Wien: Europa-Verl., 1999
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Boston: Northeastern Univ. Press, 1999
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Hamilton: Department of Economics, University of Waikato, September 2015
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Elsevier BV, 2016
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JSTOR, 1999
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Public Library of Science (PLoS), 2009
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Ovid Technologies (Wolters Kluwer Health), 2018
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Ovid Technologies (Wolters Kluwer Health), 2017
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Elsevier BV, 2021
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Massachusetts Medical Society, 2010
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2022
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Public Library of Science (PLoS), 2022
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Elsevier BV, 2012
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Public Library of Science (PLoS), 2011
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Elsevier BV, 2011
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Elsevier BV, 2018
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Elsevier BV, 2018
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Elsevier BV, 2020
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Springer Science and Business Media LLC, 2022