title: Potential unblinding of ART study.
authors.forename: Dieter
authors.initials: D
authors.lastname: Wettig
mesh_terms: D015670:Acupuncture Therapy; D006801:Humans; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D018781:Tension-Type Headache / Q000628:therapy*