References

  1. Jankovic J, Ford J: Blepharospasm and orofacial-cervical dystonia: clinical and pharmacological findings in 100 patients. Ann Neurol 1983; 13: 402-441
  2. Aminoff MJ, Dedo HH, Isdebeski K: Clinical aspects of spasmodic dysphonia. J Neurol Neurosurg Psychiatry 1978; 41: 361-365