1. Pediatric Hematology and Oncology Unit; A.R.N.A.S. Ospedale Civico; Palermo Italy
2. Department of Sciences for Health Promotion; University of Palermo; Italy
3. Clinical and Experimental Hematology Unit; G. Gaslini Children's Hospital; Genova Italy
4. Flow Cytometry Service; Laboratory of Clinical Chemistry and Microbiology, IRCCS “Ca' Granda” Foundation, Maggiore Hospital Policlinico; Milan Italy
5. Ematologia; Dipartimento di Scienze Pediatriche, Ospedale Infantile Regina Margherita; Torino Italy
6. Department of Pediatric Onco-hematology; University Hospital; Parma Italy
7. Fondazione MBBM, Clinica Pediatrica, Università di Milano - Bicocca; A.O. San Gerardo Monza Italy
8. Immunologia Pediatrica, Università Tor Vergata; Roma Italy
9. Department of Pediatrics; IRCCS “Ca' Granda” Foundation, Maggiore Hospital Policlinico; Milan Italy
10. Department of Hematology; IRCCS Casa Sollievo della Sofferenza; San Giovanni Rotondo Italy
11. A.O.R.N. Santobono Pausillipon; Naples Italy
12. Dipartimento di Scienze e Chirurgia Pediatriche, U. O. Oncoematologia Pediatrica, Ospedale Policlinico- Giovanni XXIII; Bari Italy
13. Pediatric Oncology-Hematology and BMT Unit; Children's Hospital, Spedali Civili; Brescia Italy
14. Hematology Unit, Hospital of Pescara; Italy
15. Dipartimento di Oncoematologia Pediatrica, Università di Padova; Italy
16. Pediatric Hematology and Oncology Unit; Policlinico Hospital, University of Catania; Italy
17. Department of Pediatric Onco-Hematology; Meyer Children's Hospital; Florence Italy
18. Institute of Maternal and Child Health IRCCS Burlo Garofolo; Trieste Italy