1. Marsden CD, Harrison MJG (1974) Idiopathic torsion dystonia (dystonia musculorum deforams). A review of forty-two patients. Brain 30:623–631
2. Fahn S, Marsden CD, Calne DB (1987) Classification and investigation of dystonia. In: Marsden CD, Fahn S (eds) Movement disorders 2. London: Buttersworth, pp 332–358
3. Jahanshahi M (2005) Behavioural and psychiatric manifestations in Dystonia. In: Anderson K, Weiner, W, Lang A (eds) Advances in Neurology Series. Behavioural Neurology of Movement Disorders, 2nd Edition. Williams & Wilkins
4. Jahanshahi M, Marsden CD (1988) Depression in torticollis: A controlled study. Psychol Med 18:925–933
5. Naber D, Winberger DR, Bullionger M, et al. (2002) Personality variables, neurological and psychopathological symptoms in patients suffering from spasmodic torticollis. Compr Psychiatr 29:182–187