1. UCSF Weill Institute for Neurosciences, Department of Neurology, 675 Nelson Rising Lane, San Francisco, CA 94158, USA
2. NeuroRx Research and Montreal Neurological Institute, Montreal, Quebec, Canada; Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
3. Tampa Neurology Associates, Tampa, FL, USA
4. Central Texas Neurology Consultants, Round Rock, TX, USA
5. Oxford PharmaGenesis, Oxford, UK
6. Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA