1. Department of Mother–Child and Biology–Genetics, University of Verona, Verona, Italy
2. Division of Neonatology, Catholic University of Sacred Heart, Rome, Italy
3. Immunohematology and Transfusion Center, Department of Pathology and Laboratory Medicine, University Hospital of Parma, Parma, Italy
4. Department of Morphological–Biomedical Science, University of Verona, Verona, Italy
5. Neonatal Intensive Care Unit, University of Cagliari, Cagliari, Italy