title: Parkinson's disease update.
authors.affiliation: Roger Williams Medical Center, Providence, RI.
authors.forename: J H
authors.initials: JH
authors.lastname: Friedman
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D010300:Parkinson Disease / Q000209:etiology / Q000266:history / Q000628:therapy