1. Uzhhorod national university, physiology and pathophysiology, Uzhhorod, Ukraine
2. Saint Martin Hospital, Department of Hematology and Oncology, Mukachevo, Ukraine
3. Medical University of Vienna, Department of Medicine I, Clinical Division of Haematology and Haemostaseology, Vienna, Austria
4. Dnipropetrovsk Regional Perinatal center, Dnipropetrovsk, Ukraine