Long-term effects of bilateral subthalamic nucleus deep brain stimulation on gait disorders in Parkinson's disease: a clinical-instrumental study. - Cavallieri F; Campanini I; Gessani A; Budriesi C; Fioravanti V; Di Rauso G; Feletti A; Damiano B; Scaltriti S; Guagnano N; Bardi E; Corni MG; et al. (Journal of neurology, 2023)