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Lookup NU author(s): Dr Lindsay Pennington
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Author(s): Pennington L, Goldbart J, Marshall J
Publication type: Article
Publication status: Published
Journal: Cochrane Database of Systematic Reviews
ISSN (electronic): 1469-493X
Publisher: John Wiley & Sons Ltd.
Notes: New search for studies and content updated (no change to conclusions), published in Issue 9, 2011.
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