1. Department of Internal Medicine III – Oncology, Hematology, Immunology and Rheumatology, University Hospital Bonn, Bonn, Germany
2. Department of Internal Medicine II – Cardiology, Angiology and Pulmonology, University Hospital Bonn, Bonn, Germany
3. Rheumatology and Clinical Immunology, Immanuel Krankenhaus Berlin, Berlin, Germany
4. Department of Radiology, University Hospital Bonn, Bonn, Germany