1. Department of Biomedical Research (DBMR), University of Bern, 3008 Bern, Switzerland
2. Department of Rheumatology and Immunology, University Hospital of Bern, 3010 Bern, Switzerland
3. Nuffield Department of Medicine, The Jenner Institute, University of Oxford, Oxford OX1 2JD, UK
4. Department of Oncology, Lausanne University Hospital and University of Lausanne, 1066 Lausanne, Switzerland