https://www.cochrane.org/fr/CD004312/MOVEMENT_traitement-par-la-toxine-botulique-de-type-ou-par-des-anticholinergiques-chez-les-personnes 2021 false false false France United Kingdom review of literature french abstract cholinergic antagonists anticholinergic agents toxin, nos spasmodic torticollis botulinum toxins torticollis botulism cervical dystonia posture botulism persons head posture, nos