1. Section of Neurology, Hospital Arquitecto Marcide, Ferrol University Hospital Complex (CHUF), Ferrol, Spain
2. Department of Neurology, Hospital Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain
3. Department of Neurology, Hospital del Mar, Barcelona, Spain
4. Section of Gastrointestinal Endoscopy, Department of Gastroenterology, Hospital del Mar, Barcelona, Spain
5. Department of Gastroenterology, Hospital Clínico San Carlos, Madrid, Spain
6. Department of Gastroenterology, Hospital Ramón y Cajal, Madrid, Spain
7. Unit of Movement Disorders & Parkinson’s Disease, Gran Canaria University Hospital, Las Palmas de Gran Canaria, Spain
8. Department of Neurology, Movement Disorders Unit, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
9. Department of Health Sciences, Universitat Oberta de Catalunya (UOC), Barcelona, Spain
10. Nursing Clinic, Department of Neurology, Burgos University Hospital, Burgos, Spain