title: Study limitations.
authors.forename: R A C
authors.initials: RA
authors.lastname: Chate
mesh_terms: D015670:Acupuncture Therapy / Q000379:methods*; D003761:Dental Impression Technique; D005683:Gagging / Q000517:prevention & control*; D006801:Humans; D016032:Randomized Controlled Trials as Topic