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. Author manuscript; available in PMC: 2014 Sep 22.
Published in final edited form as: Cochrane Database Syst Rev. 2012 May 16;5:CD007583. doi: 10.1002/14651858.CD007583.pub3
INCLUSION CRITERIA
Type of study design, as described by authors: Mark as appropriate Relevant supporting text and location. (page/column/paragraph)
Randomised controlled trial (RCT)
Quasi-randomised controlled trial (RCT)