Degenerative Diseases of the Nervous System, Parkinson Disease
Adams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014
Facial Bradykinesia
JNNP 84:681-685, Bologna, M.,et al, 2013
An 81-Year-Old Man with Imbalance and Memory Impairment
, Golbe,L.I.,et al,