1. Department of Rheumatology, Clinical Immunology and Allergology; Inselspital/University Hospital of Bern; Bern Switzerland
2. Graduate School for Cellular and Biomedical Sciences; University of Bern; Switzerland
3. Institute of Clinical Chemistry; Inselspital/University Hospital of Bern; Bern Switzerland
4. Regional Blood Transfusion Service of the Swiss Red Cross; Bern Switzerland