1 Department of Pediatrics, University of California San Francisco Weill Institute for Neurosciences, San Francisco, CA 94158, USA.
2 Department of Pediatrics, University of California San Francisco Weill Institute for Neurosciences, San Francisco, CA 94158, USA; Department of Neurology, University of California San Francisco Weill Institute for Neurosciences, San Francisco, CA 94158, USA. Electronic address: donna.ferriero@ucsf.edu.