title: Allocation concealment in clinical trials.
authors.forename: Kenneth F
authors.initials: KF
authors.lastname: Schulz
authors.forename: Douglas G
authors.initials: DG
authors.lastname: Altman
authors.forename: David
authors.initials: D
authors.lastname: Moher
mesh_terms: D015982:Bias; D015201:Meta-Analysis as Topic; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic