1. Departments of Neurology, Tohoku University Hospital, Japan
2. Department of Neurology, Tokyo General Hospital, Japan
3. Department of Cardiology, Tokyo General Hospital, Japan
4. Department of Cardiology, Tohoku University Hospital, Japan
5. Department of Pediatrics, Hokkaido University Hospital, Japan
6. Diagnostics and Therapeutic of Intractable Diseases, Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, Japan
7. Department of Clinical Biology and Hormonal Regulation, Tohoku University Graduate School of Medicine, Japan
8. Department of Metabolism, Chiba Children's Hospital, Japan