1. Division of Endocrinology, Diabetes and Metabolism, Hematology, Rheumatology (The Second Department of Medicine), Ryukyu University Hospital, Japan
2. Center of Bone Marrow Transplantation, Graduate School of Medicine, University of the Ryukyus, Japan
3. Laboratory of Hematoimmunology, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Japan