Parkinson’s disease (PD) is a neurodegenerative movement disorder that is classically characterized by the motor symptoms of bradykinesia, muscle rigidity, resting tremor, and, in later stages, postural instability. It affects between 4.1 and 4.6 million people worldwide and is poised to…
It appears that, with sufficient survival time, virtually all PD patients will develop CI and that this nonmotor complication is associated with substantial morbidity and mortality.
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