1. Movement Disorders Unit; Neurology Department; Vall d'Hebron University Hospital; Neurodegenerative Diseases Research Group-Vall d'Hebron Research Institute; Autonomous University of Barcelona; Barcelona Spain
2. Digestive Endoscopy Department; Vall d'Hebron University Hospital; Barcelona Spain
3. Sleep Unit; Neurophysiology Department; Vall d'Hebron University Hospital; Barcelona Spain
4. Electromyography Unit; Neurophysiology Department; Vall d'Hebron University Hospital; Barcelona Spain
5. Nutritional Support Department; Vall d'Hebron University Hospital; Barcelona Spain
6. Pharmacy Department; Vall d'Hebron University Hospital; Barcelona Spain