1. Pediatric Clinic, University Clinical Center of Kosovo, Pristina, Kosova
2. Clinic of Surgery, University Clinical Center of Kosovo, Pristina, Kosova
3. Institute of Pathology, University Clinical Center of Kosova, Pristina, Kosova
4. National Institute of Public Health, Pristina, Kosova
5. Clinical Units for Tissue Typing, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Croatia