Degenerative Diseases of the Nervous System, Parkinson Disease
Adams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014
Life-Threatening Cranial Dystonia Following Trihexyphenidyl Withdrawal
Movement Disorders 4:349-353, Gimenez-Roldan,S.,et al, 1989
Primary Writing Tremor & Myoclonic Writer's Cramp
Neurol 35:1387-1391, Ravits,J.,et al, 1985
Drug Therapy of Parkinsonism
NEJM 295:814, Bianchine,J.R., 1976