1. Department of Internal Medicine, Division Vascular Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
2. Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
3. Department of Pathology and Medical Biology, Section Pathology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
4. Division of Musculoskeletal and Dermatological Sciences, The University of Manchester, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK