1. Neonatal Intensive Care Unit, G. d’Annunzio University , Chieti , Italy
2. Department of Innovative Technologies in Medicine and Dentistry , University “G. d’Annunzio” Chieti-Pescara , Chieti , Italy
3. Immunohematology and Transfusional Medicine Service , “SS. Annunziata” Hospital , Chieti , Italy
4. Pediatric Unit, Department of Medical and Surgical Sciences , Magna Graecia University , Catanzaro , Italy
5. Department of Maternal Fetal and Neonatal Medicine , C. Arrigo Children’s Hospital Alessandria , Alessandria , Italy