Subthalamic deep brain stimulation and levodopa in Parkinson's disease: a meta-analysis of combined effects.
Joaquin A VizcarraMiguel Situ-KcomtCarlo Alberto ArtusiAndrew P DukerLeonardo LopianoMichael S OkunAlberto J EspayAristide MerolaPublished in: Journal of neurology (2018)
Subthalamic nucleus deep brain stimulation and levodopa independently lessened motor severity in PD to a similar magnitude, but their combined effect was greater than either treatment alone, suggesting therapeutic synergism.