title: [Parkinson's disease: principal signs and natural development].
authors.forename: A
authors.initials: A
authors.lastname: Guillard
mesh_terms: D006801:Humans; D009122:Muscle Hypertonia / Q000209:etiology; D010300:Parkinson Disease / Q000150:complications* / Q000503:physiopathology; D014202:Tremor / Q000209:etiology
vernacular_title: Maladie de Parkinson: signes principaux et évolution naturelle.