1. Department of Pediatrics; Saitama Medical University Hospital; Iruma Saitama Japan
2. Community Health Science Center; Saitama Medical University; Iruma-gun Saitama Japan
3. Toyohira Ota Children's Clinic; Sapporo Hokkaido Japan
4. Department of Pediatrics; Kurashiki Central Hospital; Kurashiki Okayama Japan
5. Department of Pediatrics; Anjo Kosei Hospital; Anjo Aichi Japan
6. Department of Pediatrics; Obihiro Kosei Hospital; Obihiro Hokkaido Japan
7. Department of Pediatrics; Japanese Red Cross Wakayama Medical Center; Wakayama City Wakayama Japan
8. Department of Hematology and Oncology; Children's Medical Center; Japanese Red Cross Nagoya First Hospital; Nagoya Aichi Japan
9. Department of Pediatrics; Kagoshima City Hospital; Kagoshima City Kagoshima Japan
10. Department of Pediatrics; Mie University Hospital; Tsu Mie Japan
11. Department of Pediatrics; Sakai Hospital; Kindai University; Sakai Osaka Japan
12. Department of Pediatrics; Nagasaki University Hospital; Nagasaki City Nagasaki Japan
13. Department of Pediatrics; Saga University Hospital; Saga City Saga Japan
14. Department of Pediatrics; Kyushu University Hospital; Fukuoka City Fukuoka Japan
15. Department of Pediatrics; Yamaguchi University Hospital; Ube Yamaguchi Japan
16. Department of Clinical and Education of Doctor Center; Shiga University of Medical Science; Otsu Shiga Japan