title: Observational research in the evidence based environment: eclipsed by the randomised controlled trial?
authors.forename: R H
authors.initials: RH
authors.lastname: Stables
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000379:methods; D001026:Coronary Artery Bypass / Q000379:methods; D019317:Evidence-Based Medicine; D006801:Humans; D019370:Observation; D011364:Professional Practice; D011788:Quality of Life; D016032:Randomized Controlled Trials as Topic; D012107:Research Design