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FilenameFormatSizeDescription
apt12177-sup-0001-TableS1.docWord document72KTable S1. Electronic-search in Pubmed up to 15 September 2011.
apt12177-sup-0002-TableS2.docWord document79KTable S2. Quality assessment of included studies.
apt12177-sup-0003-TableS3.docWord document131KTable S3. Characteristics of the included studies.

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