1. Department of Hematology Kanazawa University Hospital Kanazawa Ishikawa Japan
2. Department of Pathology and Tumor Biology Graduate School of Medicine Kyoto University Kyoto Japan
3. Division of Hematopoietic Disease Control Institute of Medical Science The University of Tokyo Tokyo Japan
4. Institute for the Advanced Study of Human Biology Kyoto University Kyoto Japan
5. Center for Hematology and Regenerative Medicine Karolinska Institute Stockholm Sweden