Fieschi, C [Drug therapy of Parkinson's disease with amantadine and levodopa]. [electronic resource] - Sistema nervoso - 126-43 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0049-0636 Subjects--Topical Terms: Amantadine--therapeutic useDihydroxyphenylalanine--administration & dosageDrug HypersensitivityDrug ToleranceHumansParkinson Disease--drug therapyPlacebos--therapeutic use