1. Neurology Service, Headache Unit Hospital Universitari de Bellvitge‐IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat Barcelona Spain
2. Neurology Service, Multiple Sclerosis Unit Hospital Universitari de Bellvitge‐IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat Barcelona Spain
3. Neurology Department Hospital de Viladecans‐IDIBELL Viladecans, Barcelona Spain
4. Neurology Service, Neurophysiology Department Hospital Universitari de Bellvitge‐IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat Barcelona Spain