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New York; Berlin; Heidelberg [u.a.]: Springer, 1989
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New York, NY: Springer New York, 1989
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BMJ Publishing Group, 2003
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Oxford University Press (OUP), 1999
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Elsevier BV, 1986
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BMJ, 2021
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OPUS, 2020
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Wiley, 2018
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Wiley, 2009
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Springer Science and Business Media LLC, 2008
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SAGE Publications, 2002
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SAGE Publications, 2001
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Kluwer Academic Publishers, 2001
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Ovid Technologies (Wolters Kluwer Health), 1998
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Williams & Wilkins and Epidemiology Resources Inc., 1998
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Elsevier BV, 1996
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BMJ Publishing Group, 1996
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Ovid Technologies (Wolters Kluwer Health), 1994
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Williams & Wilkins and Epidemiology Resources Inc., 1994
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Elsevier BV, 1988