1. Department of Radiology, Clínica Universidad de Navarra, Pamplona, Spain
2. Department of Biomedical Engineering, TECNUN Engineering School, University of Navarra, San Sebastián, Spain
3. Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania Medical Center, Philadelphia, PA, USA
4. Department of Neurology, Clínica Universidad de Navarra, Pamplona, Spain