1. Department I of Internal Medicine Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD) Faculty of Medicine University of Cologne University Hospital of Cologne Cologne Germany
2. Cologne Lymphoma Working Group Cologne Germany
3. Cancer Center Cologne Essen (CCCE) Cologne and Essen Germany
4. Center for Cancer Cell Therapy Stanford Cancer Institute Stanford USA
5. Department of Hematology and Stem Cell Transplantation West German Cancer Center University Hospital Essen University of Duisburg‐Essen Essen Germany