1. Institute of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Oslo, Norway
2. Department of Pathology & Lab. Medicine, University of Pennsylvania, Philadelphia, Pennyslvania
3. Department of Micro- and Nanosystems Technology, Vestfold University College, Tønsberg, Norway;
4. Research Laboratory, Nordland Hospital, Bodø, and University of Tromsø, Norway