%0 Journal Article %T Permanent Dementia in Idiopathic Parkinsonism Treated With Levodopa %A Wolf, Sheldon M. %A Davis, Richard L. %J Archives of Neurology %V 29 %N 4 %P 276-278 %@ 0003-9942 %D 1973-10-01 %I American Medical Association %~ DeepDyve