1. Department of Pediatrics; Yamagata University Faculty of Medicine; Yamagata Japan
2. Department of Pediatrics; Jichi Medical University; Tochigi Japan
3. Division of Neurology; National Center for Child Health and Development; Tokyo Japan
4. Department of Pediatric Neurology; Morinomiya Hospital; Osaka Japan
5. Division of Child Neurology; Kanagawa Children's Medical Center; Yokohama Japan
6. Department of Pediatrics; Kobe University Graduate School of Medicine; Kobe Japan
7. Department of Pediatrics; Showa University Faculty of Medicine; Tokyo Japan
8. Department of Child Neurology; National Center Hospital; National Center of Neurology and Psychiatry; Tokyo Japan
9. Department of Pediatrics; Tokyo Women's Medical University; Tokyo Japan
10. Department of Obstetrics and Gynecology; The Prenatal Diagnosis and Medical Genetics Program; Mount Sinai Hospital; University of Toronto; Toronto Ontario Canada
11. Division of Clinical and Metabolic Genetics; Department of Pediatrics; The Hospital for Sick Children; University of Toronto; Toronto Ontario Canada
12. Division of Neurology; Department of Pediatrics; The Hospital for Sick Children; University of Toronto; Toronto Ontario Canada
13. Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
14. Institute of Medical Genetics; Tokyo Women's Medical University; Tokyo Japan