Invited Article: Changing Concepts in Parkinson Disease: Moving Beyond the Decade of the BrainNeurol 70:1996-2003, Marras,C. &Lang,A., 2008
Parkinsonism Death Rates by Race, Sex, and GeographyNeurol 38:1558-1561, Kurtzke,J.F.&Goldberg,I.D., 1988