Cochrane handbook for systematic reviews of interventions. Higgins JPT, Thomas J, Cumpston M, Li T. JPT Higgins, J Thomas, J Chandler, M Cumpston, T Li… - 2019 - books.google.com GSID: GdSIWM3sVssJ
Preferred reporting items for systematic review and meta-analysis protocols (PRISMA-P) 2015 statement. Moher D, Shamseer L. D Moher, L Shamseer, M Clarke… - Systematic …, 2015 - systematicreviewsjournal … GSID: D616c2LXrfUJ
Research methods in health: investigating health and health services. Bowling A. A Bowling - 2014 - books.google.com GSID: 1yiZ2gRsNkkJ