1. Department of Biomedical and Clinical Sciences, Division of Inflammation and Infection/Rheumatology, Linköping University , Linköping, Sweden
2. Department of Clinical Sciences Lund, Rheumatology, Lund University , Lund, Sweden
3. AstraZeneca A/S , Copenhagen, Denmark
4. AstraZeneca Nordics , Sodertalje, Sweden
5. Statisticon AB , Uppsala, Sweden
6. Rheumatology, Department of Medical Sciences, Uppsala University , Uppsala, Sweden