1. Department of Pediatrics and Neurology,
Yale University School of Medicine,
New Haven, CT 06510
2. Department of Pediatric Neurology,
Maine Medical Center,
Portland, ME 04101
3. Department of Epidemiology and Public Health,
Yale University School of Medicine,
New Haven, CT 06510
4. Department of Pediatrics,
Brown University School of Medicine,
Providence, RI 02905