title: Comments on 'Efficiency loss because of varying cluster size in cluster randomized trials is smaller than literature suggests'.
authors.forename: Gerard J P
authors.initials: GJ
authors.lastname: van Breukelen
authors.forename: Math J J M
authors.initials: MJ
authors.lastname: Candel
mesh_terms: D016000:Cluster Analysis; D003627:Data Interpretation, Statistical; D006801:Humans; D015233:Models, Statistical; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data*; D018401:Sample Size