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    Academic Journal

    Source: Proceedings of the National Academy of Sciences of the United States of America, 1977 Mar 01. 74(3), 897-901.

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    Academic Journal

    Alternate Title: Review

    Source: New England Journal of Medicine; March 4 2004, Vol. 350 Issue 10, p1023-1035, 13p

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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal