1. Department of Laboratory Diagnostics University Hospital Centre Zagreb Zagreb Croatia
2. Department of Coagulation Research Institute for Molecular Medicine and Surgery Karolinska Institutet Stockholm Sweden
3. Department of Clinical Chemistry Karolinska University Hospital Stockholm Sweden
4. Department of Medical Biochemistry and Hematology Laboratory General County Hospital Livno Livno Bosnia and Herzegovina
5. Department of Medicine University Hospital Centre Zagreb Zagreb Croatia
6. St. Catherine Specialty Hospital Zabok Croatia