title: Cervical dystonia as a presenting symptom of Parkinson's disease.
authors.forename: Spiridon
authors.initials: S
authors.lastname: Papapetropoulos
authors.forename: Carlos
authors.initials: C
authors.lastname: Singer
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications* / Q000175:diagnosis; D014103:Torticollis / Q000209:etiology*