1. Department of Medicine III; Medical University Vienna; Vienna Austria
2. Department of Transplant Surgery; Institute for Clinical and Experimental Medicine; Prague Czech Republic
3. Department of Immunogenetics; Institute for Clinical and Experimental Medicine; Prague Czech Republic
4. Department for Blood Group Serology and Transfusion Medicine; Medical University Vienna; Vienna Austria
5. Department of Surgery; Medical University Vienna; Vienna Austria
6. Department of Nephrology; Institute for Clinical and Experimental Medicine; Prague Czech Republic