1. Lymphoma Unit Department of Onco‐Hematology IRCCS San Raffaele Scientific Institute MilanItaly
2. Division of Hematology Ospedali Civili di Brescia BresciaItaly
3. Division of Medical Oncology and Immune‐related tumors IRCCS Centro di Riferimento Oncologico (CRO) Aviano (PN)Italy
4. Division of Hematology Azienda Ospedaliera San Gerardo MonzaItaly
5. A.O. Città della Salute e della Scienza ‐ Le Molinette TurinItaly
6. Pathology Unit Ospedali Civili di Brescia BresciaItaly
7. Pathology Unit IRCCS San Raffaele Scientific Institute MilanItaly
8. Vita‐Salute San Raffaele University MilanoItaly
9. Division of Medical Oncology Azienda Ospedaliera San Paolo MilanItaly
10. Division of Hematology Ospedale Careggi FlorenceItaly
11. Infectious Diseases Unit IRCCS San Raffaele Scientific Institute Milan Italy