Figure 1. Study protocol.
*This group included seven patients with corticobasal ganglionic degeneration, three with infectious parkinsonism or prion disease, three with vascular parkinsonism with MRI abnormalities, one with psychogenic disease, one with an autoimmune disorder, one with rapid-onset dystonia-parkinsonism, one with progressive lateral sclerosis with atypical parkinsonism, and one with multiple sclerosis and idiopathic Parkinson’s disease.