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Philadelphia: Elsevier/Saunders, c2012
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Ovid Technologies (Wolters Kluwer Health), 1999
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Elsevier BV, 1997
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Massachusetts Medical Society, 1995
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Elsevier BV, 1992
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Massachusetts Medical Society, 1990
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Elsevier BV, 1983
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Elsevier BV, 1984
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Elsevier BV, 1977
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Elsevier BV, 1974
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Ovid Technologies (Wolters Kluwer Health), 2004
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Elsevier BV, 1977
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Elsevier BV, 2014
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Ovid Technologies (Wolters Kluwer Health), 2004
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Elsevier BV, 1994
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Wiley, 1984
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Wiley, 1982
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Elsevier BV, 1981
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American Association for the Advancement of Science (AAAS), 1977
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American Association for the Advancement of Science, 1977