title: How many Cochrane reviews are needed to cover existing evidence on the effects of health care interventions?
authors.affiliation: UK Cochrane Centre, Oxford, England, UK.
authors.forename: Susan
authors.initials: S
authors.lastname: Mallett
authors.forename: Mike
authors.initials: M
authors.lastname: Clarke
mesh_terms: D002986:Clinical Trials as Topic; D019317:Evidence-Based Medicine; D012196:Review Literature as Topic