1. 1Lymphoma and Chronic Lymphoproliferative Syndromes Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli,” University of Bologna, Bologna, Italy
2. 2Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
3. 3Department of Biomedical Sciences, IRCCS Humanitas Research Hospital, Humanitas University, Rozzano-Milan, Italy
4. 4Hematology and Bone Marrow Transplant Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
5. 5Department of Hemato-Oncology, Hôpital Saint-Louis, Paris, France
6. 6Department of Medicine, Hematology/Oncology, University of Rochester, Rochester, NY
7. 7Cancer Clinical Research Unit, Princess Margaret Cancer Centre, Toronto, ON, Canada
8. 8Lymphoma Unit, Royal Marsden Hospital, London, United Kingdom
9. 9Section of Hematology/Oncology, University of Chicago, Chicago, IL
10. 10Division of Hematology, Jewish General Hospital, Montreal, QC, Canada
11. 11Department of Medicine, Division of Oncology, Washington University School of Medicine in St. Louis, St. Louis, MO
12. 12Department of Oncology, Seagen Inc, Bothell, WA
13. 13Bristol Myers Squibb, Princeton, NJ
14. 14Department of Hematology/Medical Oncology, Memorial Sloan Kettering Cancer Center, New York, NY