1. Department of Laboratory Sciences; Gunma University Graduate School of Health Sciences; Maebashi Gunma Japan
2. Department of Anatomy and Cell Biology; Hyogo College of Medicine; Nishinomiya Hyogo Japan
3. Department of Hematology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
4. National Hospital Organization; Shibukawa Medical Center; Shibukawa Gunma Japan
5. Blood Transfusion Service; Gunma University Hospital; Maebashi Gunma Japan
6. Oncology Center; Gunma University Hospital; Maebashi Gunma Japan