Drug Therapy of Parkinsonism
NEJM 295:814, Bianchine,J.R., 1976
Withdrawing Amantadine in Dyskinetic Patients with Parkinson Disease
Neurol 82:300-307, Ory-Magne, F.,et al, 2014
Treatments of Parkinson Disease
Arch Neurol 60:1680-1684, Shults,C.W., 2003