1. Faculty of Medicine, University of Iceland, Reykjavik, Iceland
2. Department of Clinical Sciences Lund, Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
3. Department of Science and Research, Landspitali University Hospital, Reykjavik, Iceland
4. Faculty of Pharmaceutical Sciences, University of Iceland, Reykjavik, Iceland
5. Hospital Pharmacy, Landspitali University Hospital, Reykjavik, Iceland
6. Centre for Rheumatology Research, Landspitali University Hospital, Reykjavik, Iceland