1. UCLA Multiple Sclerosis Program, Department of Neurology David Geffen School of Medicine at the University of California Los Angeles California USA
2. Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine and Clinical Research University Hospital Basel, University of Basel Basel Switzerland
3. Jane and Terry Semel Institute for Neuroscience and Human Behavior University of California Los Angeles California USA
4. Ahmanson‐Lovelace Brain Mapping Center, Department of Neurology David Geffen School of Medicine at the University of California Los Angeles California USA