1. Division of Pediatrics Iwate Prefectural Iwai Hospital Ichinoseki Japan
2. Department of Pediatrics, Graduate School of Medical Sciences Kyusyu University Fukuoka Japan
3. Department of Pediatrics Iwate Medical University, School of Medicine Morioka Japan
4. Department of Pediatrics National Defense Medical College Tokorozawa Japan
5. Department of Pediatrics Nagoya University Graduate School of Medicine Nagoya Japan
6. Department of Pathology Kyorin University School of Medicine Mitaka Japan
7. Department of Pediatrics Kyorin University School of Medicine Mitaka Japan
8. Pediatric Hematology and Oncology Indiana University School of Medicine Indianapolis Indiana USA