1. Clinical Hematology Unit Department of Laboratory Medicine Louis Pasteur University Hospital Košice Slovakia
2. 1st Department of Anesthesiology and Intensive Medicine Medical School Louis Pasteur University HospitalŠafárik University Košice Slovakia
3. Medical School Institute of Pathological Physiology Šafárik University Košice Slovakia
4. Nephrological and Dialysis Centre Fresenius Košice Slovakia