title: The freezing phenomenon in parkinsonism.
authors.affiliation: Department of Neurology, Columbia University College of Physicians & Surgeons, New York, New York 10032, USA.
authors.forename: S
authors.initials: S
authors.lastname: Fahn
mesh_terms: D017668:Age of Onset; D005239:Fear; D005684:Gait; D006801:Humans; D009069:Movement Disorders / Q000175:diagnosis*; D010300:Parkinson Disease / Q000503:physiopathology*; D013060:Speech; D013997:Time Factors