title: Allocation concealment in randomised controlled trials: are we getting better?
authors.affiliation: York Trials Unit, University of York, York YO10 5DD, UK.
authors.forename: Laura
authors.initials: L
authors.lastname: Clark
authors.affiliation: York Trials Unit, University of York, York YO10 5DD, UK.
authors.forename: Caroline
authors.initials: C
authors.lastname: Fairhurst
authors.affiliation: York Trials Unit, University of York, York YO10 5DD, UK.
authors.forename: David J
authors.initials: DJ
authors.lastname: Torgerson
mesh_terms: D006801:Humans; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D012107:Research Design; D015983:Selection Bias