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. Author manuscript; available in PMC: 2014 May 9.
Published in final edited form as: Cochrane Database Syst Rev. 2010 Jan 20;(1):CD007694. doi: 10.1002/14651858.CD007694.pub2

Figure 1. Methodological quality summary: review authors’ judgements about each methodological quality item for each included study.

Figure 1