1 Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD) and German Hodgkin Study Group (GHSG), Faculty of Medicine and University Hospital of Cologne University of Cologne Cologne Germany.
2 Max Planck Institute for Biology of Ageing Cologne Germany.
3 Department of Immunology, Genetics and Pathology, Cancer Immunotherapy Uppsala University Uppsala Sweden.
4 Nordic Lymphoma Group (NLG) Aarhus Denmark.
5 Comprehensive Cancer Center, University Hospital University of Helsinki Helsinki Finland.
6 Department of Hematology and Oncology University of Heidelberg Heidelberg Germany.
7 Department of Hematology University of Aarhus Aarhus Denmark.
8 Rigshospitalet Copenhagen Denmark.
9 Odense University Hospital Odense Denmark.
10 Department of Hematology and Medical Oncology University of Jena Jena Germany.
11 Department of Hematology and Stem Cell Transplantation West German Cancer Center and German Cancer Consortium (DKTK Partner Site Essen), University Hospital Essen University of Duisburg-Essen Essen Germany.
12 Department of Hematopathology University of Kiel Kiel Germany.
13 Department of Nuclear Medicine University Hospital of Cologne Cologne Germany.
14 Department of Oncology Oslo University Hospital Oslo Norway.
15 KG Jebsen Centre for B cell Malignancies University of Oslo Oslo Norway.