1. Department of Medicine III; RWTH University-Hospital Aachen; Aachen Germany
2. Department of Imaging and Pathology; Catholic University of Leuven; Leuven Belgium
3. Institute of Pathology; RWTH University-Hospital Aachen; Aachen Germany
4. Department of Pathology; University of Bonn; Bonn Germany
5. Institute of Immunology; Hannover Medical School; Hannover Germany
6. Immunology Institute; Mount Sinai Medical Center; New York NY