title: Randomized, controlled trials: Gold or bronze?
authors.forename: Huai yong
authors.initials: Hy
authors.lastname: Cheng
mesh_terms: D019317:Evidence-Based Medicine / Q000592:standards*; D005853:Geriatrics / Q000592:standards*; D006801:Humans; D009735:Nursing Homes; D017410:Practice Guidelines as Topic; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D012107:Research Design / Q000592:standards*