1 Center for HUS Control, Prevention and Management, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
2 Laboratory of Medical Genetics, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
3 Bone Marrow Transplant Unit, Hematology-Oncology Department, Humanitas Cancer Center, Rozzano, Italy.
4 Paediatric Foundation MBBM, San Gerardo Hospital, Monza, Italy.
5 Paediatric Immunohaematology and Bone Marrow Transplantation Unit, San Raffaele Scientific Institute, Vita Salute San Raffaele University, Milan, Italy.
6 Hematopoietic Stem Cell Unit, Department of Hematology-Oncology, IRCCS Istituto G. Gaslini, Genova, Italy.
7 Cellular Therapy Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy.
8 Paediatric Oncology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
9 Hematology Division, Hemato-Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
10 HST Program, Hematology Immunology Department, University Hospital, Perugia, Italy.
11 Haematology Department, Azienda USL IRCCS, Reggio Emilia, Italy.
12 Division of Hematology and CTA, San Gerardo Hospital, Monza, Italy.
13 Hematology and Bone Marrow Transplantation Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.
14 Paediatric Hematoloy/Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
15 Hematology-BMT Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy.
16 Nephrology and Dialysis Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy.
18 Unit of Epidemiology in Public Health, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
19 Internal Medicine and Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.