1. Department of Laboratory Sciences; Gunma University Graduate School of Health Sciences; Maebashi Gunma Japan
2. Department of Medicine and Clinical Science; Gunma University; Maebashi Gunma Japan
3. National Hospital Organization; Nishigunma National Hospital; Shibukawa Gunma Japan
4. Blood Transfusion Service; Gunma University Hospital; Maebashi Gunma Japan
5. Oncology Center; Gunma University Hospital; Maebashi Gunma Japan