1. Department of Pediatrics and Child Health Kurume University School of Medicine Kurume Japan
2. Department of Pathology Kurume University School of Medicine Kurume Japan
3. Department of Neurosurgery Kurume University School of Medicine Kurume Japan
4. Department of Pediatrics Fukuoka University Chikushi Hospital Chikushino Japan
5. Rare Cancer Center National Cancer Center Hospital Tokyo Japan
6. Department of Diagnostic Pathology National Cancer Center Hospital Tokyo Japan
7. Department of Human Pathology Gunma University Graduate School of Medicine Maebashi Japan