title: Does a long preclinical period occur in Parkinson's disease?
authors.affiliation: Department of Neurology, University of Kansas Medical Center, Kansas City 66103.
authors.forename: W C
authors.initials: WC
authors.lastname: Koller
authors.forename: J W
authors.initials: JW
authors.lastname: Langston
authors.forename: J P
authors.initials: JP
authors.lastname: Hubble
authors.forename: I
authors.initials: I
authors.lastname: Irwin
authors.forename: M
authors.initials: M
authors.lastname: Zack
authors.forename: L
authors.initials: L
authors.lastname: Golbe
authors.forename: L
authors.initials: L
authors.lastname: Forno
authors.forename: J
authors.initials: J
authors.lastname: Ellenberg
authors.forename: L
authors.initials: L
authors.lastname: Kurland
authors.forename: A J
authors.initials: AJ
authors.lastname: Ruttenber
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging; D006801:Humans; D009420:Nervous System / Q000473:pathology; D009422:Nervous System Diseases / Q000503:physiopathology; D010300:Parkinson Disease / Q000453:epidemiology / Q000503:physiopathology* / Q000523:psychology; D011930:Reaction Time; D014055:Tomography, Emission-Computed