[1] Univ Rey Juan Carlos, Dept Phys Therapy Occupat Therapy Phys Med & Reha, Madrid, Spain
[2] Univ Rey Juan Carlos, Lab Esthesiol, Madrid, Spain
[3] Univ Rey Juan Carlos, Catedra Invest & Docencia Fisioterapia Terapia Ma, Madrid, Spain
[4] Hosp Clin San Carlos, Dept Neurol, Headache Unit, Madrid, Spain
[5] Univ Complutense, Dept Med, E-28040 Madrid, Spain