Affiliation: | 1. Department of Neurology, Division of Child Neurology, University of California, San Francisco, San Francisco CA, USA;2. Department of Neurology, Headache Center, University of California, San Francisco, San Francisco CA, USA;3. Department of Neurology, Multiple Sclerosis Center, University of California, San Francisco, San Francisco CA, USA;1. Department of Outcomes Research, Cleveland Clinic, Cleveland, OH, USA |