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jan12050-sup-0001-FigureS1.docxWord document14KFigure S1. Search strategy for Medline.
jan12050-sup-0002-FigureS2.docxWord document40KFigure S2. Study Selection Flow Diagram.
jan12050-sup-0003-TableS1.docxWord document19KTable S1. Medium and low weight of evidence studies.

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