1. Department of Pediatric Hematology and Oncology Collegium Medicum Nicolaus Copernicus University Torun University Hospital Bydgoszcz Poland
2. Pediatric Hematology Oncology Azienda Ospedaliera Universitaria Integrata Verona Italy
3. Department of Haematology and Medical Oncology Clinic for Internal Medicine II University Hospital Jena, Jena, Germany, Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute Jena Germany
4. Haematology Unit Department of Research and Clinical Oncology IRCCS Regina Elena National Cancer Institute Rome Italy
5. Department of Hematology and Transplantation Medical University Poznan Poland
6. Infectious Diseases Unit Department of Internal Medicine San Martino Policlinico Hospital—IRCCS for Oncology and Neurosciences Genoa Italy
7. Infectious Diseases Unit Department of Health Sciences [DISSAL] University of Genoa Genoa Italy
8. Infectious Disease Working Party EBMT Data Office University of Leiden Leiden The Netherlands
9. Faculty of Medicine Department of Pediatric Infectious Diseases Hadassah Medical Center Hebrew University of Jerusalem Jerusalem Israel
10. Department of Hematology Hospital de la Princesa Madrid Spain