- 1Coagulation Research, Institute for Molecular Medicine and Surgery, Karolinska Institutet, and Department of Clinical Chemistry, Karolinska University Hospital, Stockholm, Sweden; 2Hemostasis Department and Hemophilia Centre, Blood Transfusion Institute of Serbia, Belgrade, Serbia; 3Clinic of Hematology, Clinical Centre of Serbia & Faculty of Medicine, University of Belgrade, Belgrade, Serbia; 4Coagulation Unit, Hematology Centre, Karolinska University Hospital, Stockholm, Sweden; and 5Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden