1. Department of Haematology/Oncology; Wakayama Medical University; Wakayama; Japan
2. Research Institute for Microbial Diseases and WPI Immunology Frontier Research Centre; Osaka University; Osaka; Japan
3. Nagata ENT Clinic; Kumamoto; Japan
4. Koshi Dai-Ichi Hospital; Kumamoto; Japan
5. Department of Haematology; National Hospital Organization Kumamoto Medical Centre; Kumamoto; Japan
6. Department of Blood Transfusion Medicine and Cell Therapy; Kumamoto University; Kumamoto; Japan