1. Hematology Department and Bone Marrow Transplant (BMT) Unit, G. Papanicolaou Hospital, 57010 Thessaloniki, Greece
2. Medical School, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece
3. 1st Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece
4. Department of Surgery, G. Papanicolaou Hospital, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece
5. 1st Intensive Care Unit, G. Papanicolaou Hospital, 57010 Thessaloniki, Greece
6. 2nd Intensive Care Unit, G. Papanicolaou Hospital, 57010 Thessaloniki, Greece
7. 3rd Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece