title: Clinical research in anaesthesia; randomized controlled trials or observational studies?
authors.forename: R O
authors.initials: RO
authors.lastname: Feneck
mesh_terms: D000776:Anesthesiology / Q000379:methods*; D035843:Biomedical Research / Q000379:methods*; D006801:Humans; D019370:Observation; D016032:Randomized Controlled Trials as Topic