Diagnosis and Treatment of Parkinson Disease
JAMA 323:548-560, Armstrong, M.J. & Okun, M.S., 2020
Degenerative Diseases of the Nervous System, Parkinson Disease
Adams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014
Parkinson's Disease
Lancet 363:1783-1793, Samii,A.,et al, 2004