1. Department of Hematology and Clinical Immunology, Yokohama City University School of Medicine, Yokohama, Japan,
2. Clinical Laboratory Department, Yokohama City University Hospital, Yokohama, Japan,
3. Department of Medical Science and Cardiorenal medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan,
4. Department of Pathology, Yokohama City University Hospital, Yokohama, Japan