1. Third Department of Internal Medicine and Laboratory, National and Kapoditrian University of Athens, School of Medicine, “Sotiria” General Hospital, Athens, Greece
2. Department of Haematology and Bone Marrow Transplantation, Laikon General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
3. Department of Hematology, Athens Medical Center, Psychikon Branch, Athens, Greece
4. First Department of Internal Medicine, Propaedeutic, National and Kapodistrian University of Athens, School of Medicine, Laikon General Hospital, Athens, Greece
5. First Department of Internal Medicine, Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece