Exact(60)
Four electronic databases were searched to identify relevant articles.
MEDLINE and PubMed databases were searched to identify articles.
Electronic databases and grey literature were searched to August 2014.
Electronic databases were searched to initially identify 5756 articles.
If not it is searched to see if it looks like a URL.
PubMed, Embase and CNKI database were searched to get the genetic association studies.
The adjacent frame images are searched to construct similar blocks by the block-matching method.
Three databases (CINAHL, Medline, and PsycINFO) were searched to identify literature on Mental Health First Aid.
Forty one electronic data bases were searched to screen relevant experimental and quasi-experimental study designs.
Electronic databases were searched to retrieve related studies published in the past decade.
Methods: MEDLINE and EMBASE databases were electronically searched to identify published systematic reviews.
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