1. First Department of Internal Medicine and German Hodgkin Study Group (GHSG) Centre for Integrated Oncology Aachen – Bonn – Cologne – Düsseldorf (CIO ABCD) Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
2. Department of Nuclear Medicine Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
3. Department of Medical Oncology Bern University Hospital University of Bern Bern Switzerland
4. Swiss Group for Clinical Cancer Research (SAKK) Bern Switzerland