1. Department of Blood Transfusion and Transplantation Immunology; Fukushima Medical University Hospital; Fukushima Japan
2. Japanese Red Cross Miyagi Blood Center; Sendai Japan
3. Japanese Red Cross Fukushima Blood Center; Fukushima Japan
4. Department of Blood transfusion; Jikei University Hospital; Tokyo Japan
5. National Institute of Public Health; Saitama Japan
6. Department of Orthopedic Surgery; Fukushima Medical University Hospital; Fukushima Japan