title: Twenty years of the Cochrane Collaboration.
abstract: The Cochrane Collaboration is 20 years old this year. Established in 1993, the Collaboration has sought to provide an up-to-date, critical evidence base for all those involved in health care decision-making at a variety of levels. This article illustrates the work of the Cochrane Oral Health Group, based at the University of Manchester, UK.
authors.affiliation: The University of Manchester, School of Dentistry, Oxford Road, Manchester, M13 9PL, UK. helen.worthington@manchester.ac.uk
authors.forename: H V
authors.initials: HV
authors.lastname: Worthington
authors.forename: A-M
authors.initials: AM
authors.lastname: Glenny
authors.forename: J E
authors.initials: JE
authors.lastname: Clarkson
mesh_terms: D057186:Comparative Effectiveness Research; D055094:Evidence-Based Dentistry; D055317:Evidence-Based Practice; D006801:Humans; D015201:Meta-Analysis as Topic; D016032:Randomized Controlled Trials as Topic; D012196:Review Literature as Topic
keywords: clinical studies/trials; comparative effectiveness research (CER); evidence-based dentistry/health care; evidence-based medicine; meta-analysis; systematic reviews