1 Department of Haematology and Bone Marrow Transplantation Unit, National and Kapodistrian University of Athens, School of Medicine, Laikon General Hospital, Athens, Greece.
2 1st Propedeutic Department of Internal Medicine, National and Kapodistrian University of Athens, School of Medicine, Laikon General Hospital, Athens, Greece.
3 Department of Haematology, Athens Medical Center, Psychikon Branch, Athens, Greece.
4 1st Department of Internal Medicine, Hematology Unit, National and Kapodistrian University of Athens, School of Medicine, Laikon General Hospital, Athens, Greece.
5 Second Department of Internal Medicine, National and Kapodistrian University of Athens, Hippokration General Hospital, Athens, Greece.