1. Department of Transfusion Medicine and Transplantation BiologyUniversity Hospital Center ZagrebZagreb Croatia
2. Department of Dental MedicineUniversity Hospital Center ZagrebZagreb Croatia
3. University of Zagreb, School of Dental MedicineZagreb Croatia
4. Division of Hematology, Department of Internal MedicineUniversity Hospital Center ZagrebZagreb Croatia
5. University of Zagreb, School of MedicineZagreb Croatia
6. J. J. Strossmayer University of Osijek, Faculty of Medicine OsijekOsijek Croatia
7. National Cancer Institute, Center for Cancer Research, NIHBethesda Maryland