1. Hematology and Stem Cell Transplant UnitIRCCS Regina Elena National Cancer Institute Rome Italy
2. Hematology DivisionASST‐Spedali Civili di Brescia Brescia Italy
3. Fondazione Policlinico Universitario Agostino Gemelli – IRCCS Rome Italy
4. Hematology and Bone Marrow Transplantation Unit, Department of Emergency and Organ TransplantationUniversity of Bari Bari Italy
5. Hematology and Stem Cell Transplantation Unit'Vito Fazzi' Hospital Lecce Italy
6. Hematology, Department of Biomedicine and PreventionTor Vergata University Rome Italy
7. Hematology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
8. UO of Hematology, Foundation IRCSS Casa Sollievo della Sofferenza Hospital San Giovanni Rotondo Italy
9. Pediatric Hematology OncologyUniversity Hospital Santa Maria della Misericordia Perugia Italy
10. Hematology UnitBianchi‐Melacrino‐Morelli Hospital Reggio Calabria Italy
11. Bone Marrow Transplant UnitUniversity of Brescia and ASST‐Spedali Civili Brescia Italy
12. HematologySan Camillo‐Forlanini Hospital Rome Italy
13. Division of HematologyFoundation IRCCS Policlinico San Matteo, University of Pavia Pavia Italy
14. HematologySan Eugenio Hospital Rome Italy
15. Hematology and Stem Cell Transplantation UnitUniversity Campus Bio‐Medico Rome Italy
16. Pediatric Hematology OncologyAzienda Ospedaliera Universitaria Integrata Verona Italy
17. Pediatric Hematology OncologyIRCCS Policlinico San Matteo, University of Pavia Pavia Italy
18. Istituto di Malattie Infettive, Università Cattolica del Sacro Cuore Rome Italy
19. Stem Cell Transplant Center, AOU Citta' della Salute e Della Scienza Turin Italy
20. Istituto di Ematologia, Università Cattolica del Sacro Cuore Rome Italy