Differentiating drug-induced parkinsonism from Parkinson's disease: an update on non-motor symptoms and investigations.
Parkinsonism Relat Disord. 2014 Aug;20(8):808-14. doi: 10.1016/j.parkreldis.2014.05.011. Epub 2014 Jun 3.
Parkinsonism Relat Disord. 2014.
PMID: 24935237
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Review.