Degenerative Diseases of the Nervous System, Parkinson Disease
Adams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014
Dopa Responsive Dystonia:A Treatable Condition Misdiagnosed as Cerebral Palsy
BMJ 298:1019-1020, Boyd,K.&Patterson,V., 1989