Design flaws in some randomized controlled trials.
Trenouth
M J
MJ
D003818:Dentition, Mixed; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000628:therapy; D010155:Palatal Expansion Technique / Q000295:instrumentation; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D016896:Treatment Outcome