1. Department of Neurosurgery, University Hospital Center Zagreb, Zagreb, Croatia.
2. Department of Pediatric Infectious Diseases, University Hospital for Infectious Diseases, Dr. Fran Mihaljevic, Zagreb, Croatia.
3. Department of Pediatrics, Sestre Milosrdnice University Hospital Center, Zagreb, Croatia.
4. Department of Pathology, Clinical Medical Centre Zagreb, Zagreb, Croatia.
5. Department of Pediatrics, Division of Hematology and Oncology, Children’s Hospital Zagreb, Zagreb, Croatia.