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American Medical Association (AMA), 2007
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Wiley, 2005
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Ovid Technologies (Wolters Kluwer Health), 2021
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Springer Science and Business Media LLC, 2018
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Springer Berlin Heidelberg, 2012
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Hindawi Limited, 2010
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Informa UK Limited, 2005
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Springer Science and Business Media LLC, 2012
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Springer Science and Business Media LLC, 2004
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Springer Science and Business Media LLC, 2009
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Oxford University Press (OUP), 2011
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Informa UK Limited, 2020
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Elsevier BV, 2017
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Elsevier BV, 2016
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BMJ, 2016
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Oxford University Press (OUP), 2015
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Springer Science and Business Media LLC, 2014
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Springer Science and Business Media LLC, 2011
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Elsevier BV, 2011
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Elsevier BV, 2009