POSKANZER, D C COHORT ANALYSIS OF PARKINSON'S SYNDROME: EVIDENCE FOR A SINGLE ETIOLOGY RELATED TO SUBCLINICAL INFECTION ABOUT 1920. [electronic resource] - Journal of chronic diseases Sep 1963 - 961-73 p. digital Publication Type: Journal Article ISSN: 0021-9681 Standard No.: 10.1016/0021-9681(63)90098-5 doi Subjects--Topical Terms: Asymptomatic InfectionsBiometryCohort StudiesHumansParkinson DiseaseParkinsonian DisordersStatistics as Topic