1. Department of Nuclear Medicine and Oncology, Faculty of Medicine, University of Osijek , Osijek, Croatia
2. Department of Nuclear Medicine and Radiation Protection, Osijek University Hospital , Osijek, Croatia
3. Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Osijek , Osijek, Croatia
4. Department of Laboratory Diagnostics and Clinical Transfusion Medicine, Clinical Institute of Transfusion Medicine, Osijek University Hospital , Osijek, Croatia