Results published in the literature with the MARS system 07/27/2022 by ayushikaaa61 Image Source-Google | Image by- | pmfias Specialized in systematic critiques: Cochrane Library Plus and NHS Centre database for Reviews and Dissemination (HTA, DARE and NHSEED). General databases: Medline, Pubmed and Embase. On-going scientific trials and research venture databases: Clinical Trials Registry (National Institutes of Health, EE.UU.) and Health Services Research Projects in Progress. General web looking engines: Scholar Google.