title: Intervention research in nursing homes: the rise and rise of the cluster randomized trial.
authors.forename: Leon
authors.initials: L
authors.lastname: Flicker
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016000:Cluster Analysis; D016330:Frail Elderly; D015577:Geriatric Assessment; D006801:Humans; D009735:Nursing Homes; D016032:Randomized Controlled Trials as Topic