title: Randomized trials or observational tribulations?
authors.forename: S J
authors.initials: SJ
authors.lastname: Pocock
authors.forename: D R
authors.initials: DR
authors.lastname: Elbourne
mesh_terms: D016022:Case-Control Studies; D015331:Cohort Studies; D006801:Humans; D015201:Meta-Analysis as Topic; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D013812:Therapeutics; D016896:Treatment Outcome