Parkinson Disease With Old-Age Onset
Arch Neurol 60:529-533, Diederich,N.J.,et al, 2003
Movement Disorders Associated with the Serotonin Selective Reuptake Inhibitors
J Clin Psychiatry 57:449-454, Leo,R.J., 1996
Effect of Age at Onset on Progression and Mortality in Parkinson's Disease
Neurol 39:1187-1190, Diamond,S.G.,et al, 1989
Risk Factors for Progression in Parkinson's Disease
Neurol 38:1841-1844, Goetz,C.G.,et al, 1988