1. Department of Surgery A,
2. Department of Immunology and Transfusion Medicine, Nordland Central Hospital, and University of Tromsø, N‐8017 Bodø, Norway;
3. Department of Immunology and Blood Bank, Norwegian University for Science and Technology, N‐7006 Trondheim, Norway,
4. Department of Pathology,
5. Institute of Immunology and Rheumatology, University of Oslo, The National Hospital, N‐0027 Oslo, Norway;
6. Laboratory of Protein Chemistry, Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA