1. Department of Biomedical Science and Human Oncology, Pediatric Unit University of Bari “Aldo Moro” Bari Italy
2. Department of Pediatric Onco‐Hematology University Hospital of Parma Parma Italy
3. Pediatric Hematology and Oncology Unit A.R.N.A.S. Ospedale Civico Palermo Italy
4. Department of Translational and Precision Medicine Sapienza University of Rome Rome Italy
5. Pediatric Hemato‐Oncology Unit Department of Clinical and Experimental Medicine University of Catania Catania Italy
6. Paediatric Department ASST‐Sette Laghi “F. Del Ponte” Hospital Varese Italy
7. Pediatric Hematology‐Oncology Unit Department of Women's and Children's Health Azienda Ospedaliera‐University of Padova Padua Italy
8. Hemato‐Oncology Unit Children Hospital Spedali Civili Brescia Italy
9. Regional Reference Centre for Haemostasis and Thrombosis IRCCS Paediatric Hospital “Bambino Gesù,” Rome Italy
10. Department of Pediatric and Public Health Sciences University of Torino Turin Italy
11. Hemato‐Oncology Unit Fondazione MBBM San Gerardo Hospital Monza Italy
12. Pediatric Hematology/Oncology IRCCS Policlinico San Matteo Foundation University of Pavia Pavia Italy
13. Pediatric Hematology Oncology Presidio Ospedaliero Vito Fazzi Lecce Italy