title: Measuring the quality of trials: the quality of quality scales.
authors.forename: J A
authors.initials: JA
authors.lastname: Berlin
authors.forename: D
authors.initials: D
authors.lastname: Rennie
mesh_terms: D015982:Bias; D002986:Clinical Trials as Topic / Q000592:standards*; D015201:Meta-Analysis as Topic; D011786:Quality Control