1. Hematology Department, University Hospital Dubrava, Zagreb, Croatia
2. Department of Hematology, University Hospital of Split, Split, Croatia
3. Hematology Department, General Hospital Sibenik, Sibenik, Croatia
4. Department of Internal Medicine, “Dr. Josip Bencevic” General Hospital, Ul. Andrije Štampara, Slavonski Brod, Croatia
5. Department of Hematology, Osijek University Hospital, Osijek, Croatia
6. Faculty of Medicine, University of Osijek, Osijek, Croatia
7. Department of Internal Medicine, General Hospital Zadar, Zadar, Croatia
8. Department of Clinical Cytology and Cytometry, University Hospital Dubrava, Zagreb, Croatia
9. School of Medicine, University of Zagreb, Zagreb, Croatia