1. Department of Pediatrics Kyoto Prefectural University of Medicine Graduate School of Medical Science Kyoto Japan
2. Department of Pediatrics Oita University Oita Japan
3. Clinical Research Center National Hospital Organization Nagoya Medical Center Nagoya Japan
4. Department of hematology/oncology Hyogo Prefectural Children's Hospital Kobe Japan
5. Department of Pediatrics Mie University Tsu Japan
6. Department of Pediatrics Osaka University Suita Japan
7. Department of Hematology Oncology Children's Medical Center Japanese Red Cross Nagoya First Hospital Nagoya Japan
8. Department of Pediatrics Kansai Medical University Hirakata Japan
9. Department of Pediatrics Hokkaido University Sapporo Japan
10. Department of Pediatrics Osaka General Medical Center Osaka Japan
11. Department of Pediatrics Osaka City General Hospital Osaka Japan
12. Department of Pediatrics Okayama University Okayama Japan