1. Lymphoma Unit, IRCCS San Raffaele Scientific Institute Milan Italy
2. Università Vita e Salute San Raffaele Milan Italy
3. Department of Hematology Oncology, Stem‐Cell Transplantation and Palliative Care, Klinikum Stuttgart Stuttgart Germany
4. Department of Haematology, Erasmus MC Cancer Institute University Medical Center Rotterdam Rotterdam The Netherlands
5. Mental Health & Clinical Neurosciences Unit, School of Medicine University of Nottingham Nottingham UK
6. NIHR Nottingham Biomedical Research Centre University of Nottingham Nottingham UK
7. Department of Neuro‐Oncology, Erasmus MC Cancer Institute University Medical Center Rotterdam Rotterdam The Netherlands
8. Department of Haematology University College Hospital London UK
9. School of Medicine University of Nottingham Nottingham UK
10. Department of Neurology 2 Mazarin APHP, Groupe Hospitalier Pitié‐Salpêtrière, Sorbonne Université, ICM Paris France
11. Department of Ophthalmology Institut Curie Paris France
12. LITO, INSERM U1288, Institut Curie PSL University Orsay France
13. Pathology Unit, IRCCS San Raffaele Scientific Institute Milan Italy
14. Department of Medicine I, Medical Center, Faculty of Medicine University of Freiburg Freiburg Germany
15. Clinical Hematology Unit, Institut Curie St Cloud France
16. INSERM U932, Institut Curie PSL Research University Paris France
17. Department of Oncology, Rigshospitalet University of Copenhagen Copenhagen Denmark
18. Clinic of Medical Oncology, Oncology Institute of Southern Switzerland, Ente Ospedaliero Cantonale Bellinzona Switzerland
19. Institute of Oncology Research, Faculty of Biomedical Sciences, Università della Svizzera Italiana Bellinzona Switzerland
20. Department of Medical Oncology Bern University Hospital and University of Bern Bern Switzerland
21. Institute of Experimental Cancer Research, Comprehensive Cancer Center Ulm University Hospital of Ulm Ulm Germany
22. Department of Oncology Skåne University Hospital and Lund University Lund Sweden
23. Department of Medicine III LMU University Hospital Munich Munich Germany