title: [Anticipations: risk of bias in cluster randomized trials].
authors.forename: Pekka
authors.initials: P
authors.lastname: Vuoria
mesh_terms: D015982:Bias; D016000:Cluster Analysis; D005260:Female; D006801:Humans; D008297:Male; D016032:Randomized Controlled Trials as Topic; D012680:Sensitivity and Specificity