Degenerative Diseases of the Nervous System, Parkinson Disease
Adams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014
Postural Hypotension:Adrenergic Responsivity, & Levodopa Therapy
Neurol 27:921, Corder,C.N.,et al, 1977
Developments in the Treatment of Parkinsonism
NEJM 295:1433, Calne,D.B., 1976