1. Fondazione IRCCS Ca' Granda Ospedale Maggiore PoliclinicoNICU Milan Italy
2. Fondazione IRCCS Ca' Granda Ospedale Maggiore PoliclinicoAngelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa Milan Italy
3. Department of Clinical Sciences and Community HealthUniversità degli Studi di Milano Milan Italy
4. Department of Statistics and Quantitative Methods, Division of Biostatistics, Epidemiology and Public HealthUniversity of Milano‐Bicocca Milan Italy
5. Department of Pediatrics, Maastricht University Medical Center (MUMC+)School for Oncology and Developmental Biology (GROW) Maastricht The Netherlands
6. Department of Pathophysiology and TransplantationUniversità degli Studi di Milano Milan Italy