1. Department of Clinical Therapeutics, National and Kapodistrian University of Athens School of Medicine, Athens, Greece;
2. Department of Clinical Biochemistry, and
3. Hemostasis Unit, Hemophilia Centre, Aghia Sophia Children's Hospital, Athens, Greece;
4. Second Department of Internal Medicine, National and Kapodistrian University of Athens School of Medicine, Athens, Greece;
5. Hematology Laboratory, Blood Bank, Aretaieion Hospital, Athens, Greece;
6. First Department of Pathology, National and Kapodistrian University of Athens School of Medicine, Athens, Greece; and
7. Department of Haemopathology, Evangelismos Hospital, Athens, Greece