1. Department of Pediatrics; Kyoto Prefectural University of Medicine, Graduate School of Medical Science; Kyoto Japan
2. Division of Pediatrics; Fukuchiyama City Hospital; Fukuchiyama Japan
3. Clinical Research Center, National Hospital Organization Nagoya Medical Center; Nagoya Japan
4. Division of General Pediatrics and Emergency Medicine; Department of Pediatrics; Oita University; Oita Japan
5. Department of Hematology/Oncology; Hyogo Prefectural Children's Hospital; Kobe Japan
6. Department of Pediatrics; Mie University; Tsu Japan
7. Department of Pediatrics; Osaka University; Osaka Japan
8. Department of Pediatrics; Kansai Medical University; Hirakata Japan
9. Department of Pediatrics; Japanese Red Cross Nagoya Daiichi Hospital; Nagoya Japan
10. Department of Pediatrics; Osaka General Medical Center; Osaka Japan
11. Department of Pediatrics; Osaka City General Hospital; Osaka Japan
12. Department of Allergy and Immunology; National Center for Child Health and Development; Tokyo Japan
13. Department of Pediatric Hematology and Oncology Research; National Center for Child Health and Development; Tokyo Japan
14. Department of Pediatrics; Okayama University; Okayama Japan
15. Department of Pediatric Hematology/Oncology; Miyagi Children's Hospital; Sendai Japan