title: Letter: Acupuncture anaesthesia.
mesh_terms: D015670:Acupuncture Therapy; D000766:Anesthesia, Dental; D003061:Codeine / Q000008:administration & dosage; D004056:Differential Threshold; D006801:Humans; D008340:Mandibular Nerve; D009407:Nerve Block; D010146:Pain; D010465:Perception; D010919:Placebos
chemical_list: D010919:Placebos; D003061:Codeine