Botulinum Toxin Type A Purified Neurotoxin Complex (Botox) or Clostridium Botulinum Type A Toxin-Haemagglutinin Complex (Dysport) or IncobotulinumtoxinA (Xeomin), injection of, for the treatment of cervical dystonia (spasmodic torticollis), including all such injections on any one day