Parkinson's Disease in Twins Studied with 18 F-Dopa and Positron Emission tomography
Neurol 42:1894-1900, Burn,D.J.,et al, 1992
Degenerative Diseases of the Nervous System, Parkinson Disease
Adams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014