1. Laboratory of Experimental Internal Medicine, Academic Medical Center Meibergdreef 9 1105 AZ Amsterdam The Netherlands
2. Department of Gastroenterology and Hepatology, Academic Medical Center Meibergdreef 9 1105 AZ Amsterdam The Netherlands
3. Department of Cell Biology and Histology, Academic Medical Center Meibergdreef 9 1105 AZ Amsterdam The Netherlands
4. Department of Rheumatology and Clinical Immunology, Charité University Hospital Schumannstrasse 20/21 10117 Berlin Germany
5. Department of Cell Biology, University of Groningen A Deussinglaan 1 9713 AV Groningen The Netherlands