1. Department of Pediatrics; Graduate School of Medical Science, Kyoto Prefectural University of Medicine; Japan
2. Department of Pediatrics; National Hospital Organization Maizuru Medical Center; Japan
3. Department of Pediatrics; Japanese Red Cross Kyoto Daini Hospital; Japan
4. Department of Pediatrics; Mie University; Japan
5. Department of Pediatrics; Osaka University; Japan
6. Department of Pediatrics; University of Fukui; Japan
7. Department of Pediatric Hematology and Oncology Research; National Research Institute for Child Health and Development; Japan
8. Clinical Research Center, National Hospital Organization Nagoya Medical Center; Japan
9. Department of Hematology/Oncology; Miyagi Children's Hospital; Japan