PT - JOURNAL ARTICLE AU - Margaret M. Hoehn AU - Melvin D. Yahr TI - Parkinsonism AID - 10.1212/WNL.17.5.427 DP - 1967 May 01 TA - Neurology PG - 427--427 VI - 17 IP - 5 4099 - http://n.neurology.org/content/17/5/427.short 4100 - http://n.neurology.org/content/17/5/427.full SO - Neurology1967 May 01; 17