1 Cologne Lymphoma Working Group, Department of Internal Medicine, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany.
2 Center for Integrated Oncology Aachen Bonn Köln Düsseldorf (CIO ABCD), Germany.
3 Klinik für Hämatologie, Onkologie und klinische Immunologie, Universitätsklinikum Düsseldorf, Düsseldorf, Germany.