1. Department of Laboratory Sciences; Gunma University Graduate School of Health Sciences; Maebashi Japan
2. Department of Anatomy and Cell Biology; Hyogo College of Medicine; Maebashi Japan
3. Department of Haematology; Gunma University Graduate School of Medicine; Maebashi Japan
4. Blood Transfusion Service; Gunma University Hospital; Maebashi Japan
5. Oncology Centre; Gunma University Hospital; Maebashi Japan