1. Department of Rheumatology, University Hospital Basel, 4031 Basel, Switzerland
2. Division of Nuclear Medicine, University Hospital Basel, 4031 Basel, Switzerland
3. Department of Angiology, University Hospital Basel, 4031 Basel, Switzerland
4. University Center for Immunology, University Hospital Basel, 4031 Basel, Switzerland
5. Department of Biomedicine, University of Basel, 4031 Basel, Switzerland
6. Department of Radiology, Clinic of Radiology and Nuclear Medicine, University Hospital Basel, 4031 Basel, Switzerland
7. Institute for Radiology and Nuclear Medicine, Hirslanden Klinik St. Anna, 6006 Lucerne, Switzerland