DOI: 10.1055/s-00000019

Fortschritte der Neurologie · Psychiatrie

References

Pedersen KF, Larsen JP, Aarsland D.
Validation of the Unified Parkinson's Disease Rating Scale (UPDRS) section I as a screening and diagnostic instrument for apathy in patients with Parkinson's disease. 
Parkinsonism Relat Disord 2008; 14: 183-186  

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