1. Medical Department, Laboratorios Bial, S.A., Madrid, Spain;
2. Refractory Epilepsy Unit, Neurology Service, Hospital Universitario y Politécnico La Fe, Valencia, Spain
3. Epilepsy Unit/Neurology Service, Hospital Universitario Fundación Jiménez Díaz and IIS Fundación Jiménez Díaz UAM, Madrid, Spain
4. Institute of Neurosciences, University of Granada, Granada, Spain
5. Cociente S.L., Madrid, Spain
6. Faculty of Health Sciences, Alfonso X El Sabio University, Madrid, Spain