1. Division of Blood Transfusion Service, Gunma University Hospital, Faculty of Medicine, Gunma University
2. Department of Clinical Laboratory, Japan Community Health Care Organization Gunma Chuo Hospital
3. Department of Central Clinical Laboratory, Kiryu Kosei General Hospital
4. Department of Laboratory Medicine, Saiseikai Maebashi Hospital
5. Department of Clinical Laboratory, National Hospital Organization Takasaki General Medical Center
6. Japanese Red Cross Society, Department of Clinical Laboratory, Japanese Red Cross Maebashi Hospital
7. Division of Nursing, Gunma University Hospital
8. Department of Hematology Science, Gunma University Graduate School of Medicine