Nonmotor Fluctuations in Patients with Parkinson's Disease
Neurol 47:1180-1183, Hillen,M.E.&Sage,J.I., 1996
Primary Sensory Symptoms in Parkinsonism
Neurol 26:423, Snider,S.R.,et al, 1976
Neurologic Complications of Polycythemia
Ann Int Med 57:909, Silverstein,A.,et al, 1962