1. Departments of Neurology and Molecular Microbiology and Immunology Institute for Molecular Virology, Saint Louis Veterans Affairs Medical Center, Saint Louis University School of Medicine, St. Louis, MO
2. Departments of Neurology/Neurosurgery and Pediatrics McGill University, Montreal Children's Hospital/McGill University Hospital Centre, Montreal, QC, Canada michael. shevell@muhc. mcgill. ca.