1. Department of Immunology Landspitali University Hospital Reykjavík Iceland
2. Department of Rheumatology Landspitali University Hospital Reykjavik Iceland
3. Department of Gynaecology Landspitali University Hospital Reykjavik Iceland
4. Department of Haematology Skåne University Hospital Lund Sweden
5. Blood Bank Landspitali University Hospital Reykjavík Iceland
6. Centre for Rheumatology Research Landspitali University Hospital Reykjavik Iceland
7. Faculty of Medicine University of Iceland Reykjavík Iceland