1. Department of Pediatric Hematology/Oncology and Transfusion Medicine, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
2. Department of Laboratory Medicine, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
3. Department of Pediatrics, S. Orsola-Malpighi Hospital, Bologna, Italy
4. Department of Gynecology and Obstetrics, Catholic University Med. School, Rome, Italy
5. Department of Pediatric Hematology/Oncology, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
6. Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy
7. University of Pavia, Pavia, Italy