Opicapone as an adjunct to levodopa in patients with Parkinson's disease and end-of-dose motor fluctuations: a randomised, double-blind, controlled trial.
Ferreira JJ, Lees A, Rocha JF, Poewe W, Rascol O, Soares-da-Silva P; Bi-Park 1 investigators.
Lancet Neurol. 2016 Feb;15(2):154-165. doi: 10.1016/S1474-4422(15)00336-1. Epub 2015 Dec 23.
PMID:26725544
Dyskinesia in Parkinson's disease: a clinical complication and an open scientific question.