1. University of Debrecen, Faculty of Medicine, Division of Clinical Immunology, Móricz Zs. krt. 22, 4032 Debrecen, Hungary
2. University of Debrecen, Faculty of Medicine, Department of Laboratory Medicine, Nagyerdei krt. 98, 4032 Debrecen, Hungary
3. Institute of Immunology, Rikshospitalet, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway