1. Division of Child Neurology, Departments of Pediatrics and Neurology, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, U.S.A.;
2. Department of Pediatric Otolaryngology, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, U.S.A.; and
3. Division of Child Neurology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, U.S.A.