1. Occurrence of Dysphagia Following Botulinum Toxin Injection in Parkinsonism-related Cervical Dystonia: A Retrospective Study Patterson, Addie; Almeida, Leonardo; Hess, Christopher W.; Martinez-Ramirez, Daniel; Okun, Michael S.; Rodriguez, Ramon L.; Rundle-Gonzalez, Valerie; Shukla, Aparna Wagle; Malaty, Irene A. 2016 Articles Parkinson's disease--TreatmentBotulinum toxinDystoniaCervical vertebrae--DiseasesDeglutition disordersMovement disordersMedicineNeurosciences