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Background and purposeVery little is known about the progression of non‐motor symptoms (NMSs) in Parkinson's disease (PD) and there are no longitudinal studies exploring this topic from the earliest stage, when patients receive the diagnosis. We here report on the progression of NMSs over 4 years from diagnosis in a cohort of de‐novo, previously untreated, patients with PD.
MethodsConsecutive de‐novo...
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