title: Involuntary humming in autopsy-proven Parkinson's disease.
authors.forename: J H
authors.initials: JH
authors.lastname: Friedman
mesh_terms: D000402:Airway Obstruction / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000175:diagnosis* / Q000523:psychology; D014831:Voice