1. Division of Endocrinology, Diabetes and Metabolism, Hematology and Rheumatology, Second Department of Internal Medicine, Graduate School of Medicine, University of the Ryukyus, Japan
2. Center of Bone Marrow Transplantation, Ryukyu University, Japan
3. Unit of Organ Oriented Medicine, Division of Digestive and General Surgery, First Department of Surgery, Graduate School of Medicine, University of the Ryukyus, Japan
4. Laboratory of Immunohematology, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Japan