1. Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Saga University, Saga 849‑8501, Japan
2. Department of Clinical Laboratory Medicine, Faculty of Medicine, Saga University, Saga 849‑8501, Japan
3. Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Nara 634‑8521, Japan
4. Education and Research Center for Community Medicine, Faculty of Medicine, Saga University, Saga 849‑8501, Japan