title: Are the effects of botulinum toxin injection on myofascial trigger points placebo effects or needling effects?
authors: Ru-Lan
authors: RL
authors: Hsieh
authors: Wen-Chung
authors: WC
authors: Lee
mesh_terms: D001416:Back Pain / Q000175:diagnosis / Q000188:drug therapy; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008297:Male; D009209:Myofascial Pain Syndromes / Q000188:drug therapy*; D019547:Neck Pain / Q000175:diagnosis / Q000188:drug therapy; D015990:Placebo Effect; D012680:Sensitivity and Specificity; D016896:Treatment Outcome
chemical_list: D019274:Botulinum Toxins, Type A