1. Turku PET Centre, University of Turku, FI-20521 Turku, Finland
2. Turku PET Centre, Turku University Hospital, FI-20521 Turku, Finland
3. Turku Center for Disease Modeling, University of Turku, FI-20521 Turku, Finland
4. Turku PET Centre, Åbo Akademi University, FI-20521 Turku, Finland
5. Charité – Universitätsmedizin, Berlin, Germany
6. Department of Rheumatology, Amsterdam University Medical Center Location VU University Medical Center, Amsterdam, Netherlands