1. Department of Orthopaedics, First Faculty of Medicine, Charles University, Prague 8, Czech Republic
2. Orthopedic Clinic, First Faculty of Medicine Charles University and Institute for Postgraduate Education in Medicine, Prague 8, Czech Republic
3. Department of Social and Clinical Pharmacy, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
4. Transfusiological Division, Institute of Hematology and Blood Transfusion, Prague 2, Czech Republic
5. Centre for Thrombosis and Hemostasis, Institute of Hematology and Blood Transfusion, Prague 2, Czech Republic