1. Department of Medical Biochemistry, Hematology and Coagulation with Cytology, University Hospital for Infectious Diseases “Dr. Fran Mihaljević”, Zagreb, Croatia
2. Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Zagreb, Croatia
3. Department of Laboratory Diagnostics, General Hospital Pula, Pula, Croatia
4. Medical Biochemistry Laboratory, General Hospital “Dr. Tomislav Bardek”, Koprivnica, Croatia
5. Department of Laboratory Diagnostics, Children’s Hospital Zagreb, Zagreb, Croatia