1. Department of Transfusion Medicine; The University of Tokyo; Giessen Germany
2. Analytical Laboratory Chemistry, Graduate School of Health Care Sciences; Tokyo Medical and Dental University; Tokyo Japan
3. HLA Laboratory; Japanese Red Cross Kanto-Koshinetsu Block Blood Center; Giessen Germany
4. Department of Obstetrics and Gynecology; The University of Tokyo Hospital; Giessen Germany
5. Department of Hematology & Oncology; The University of Tokyo; Giessen Germany
6. Immunohematology Research Department; Institute for Clinical Immunology and Transfusion Medicine; Giessen Germany