The databases searched were the Cochrane Library, PubMed/Medline, Embase, ISI Web of Knowledge, Scopus and SIGLE OpenGrey. Databases were searched with no restriction on year of publication or ...
Cochrane CENTRAL Register of Controlled Trials, Medline, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Embase, SCIEXPANDED (ISI Web of Knowledge). Two authors extracted data using ...
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