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1“... the existing target value of 400.PubMed, Embase, Web of Sciences, the Cochrane Library and two Chinese...”
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2“... of Sciences, the Cochrane Library and two Chinese literature databases (CNKI, CBM) were searched. Randomized...”
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3“... search of Embase, PubMed, the Cochrane Library, ClinicalTrials.gov and three Chinese literature databases...”
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