1. Department of Haematology and Oncology, University Children’s Hospital, University Medical Centre Ljubljana (UMC), 1000 Ljubljana, Slovenia
2. Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
3. Institute of Special Laboratory Diagnostic, University Children’s Hospital, University Medical Centre Ljubljana (UMC), 1000 Ljubljana, Slovenia
4. Department of Pathology, Institute of Oncology Ljubljana, 1000 Ljubljana, Slovenia
5. Department of Pediatric Surgery, University Children’s Hospital, University Medical Centre Ljubljana (UMC), 1000 Ljubljana, Slovenia