1. Division of Chemical Biology, Department of Life Sciences, Chalmers University of Technology, Gothenburg 412 96, Sweden
2. The Rheumatology Clinic, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
3. Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg 413 46, Sweden