Affiliation: | 1. Neonatal Intensive Care Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy;2. Department of Medical and Surgical Sciences for Mothers, Children and Adults, Post Graduate School of Pediatrics, University of Modena & Reggio Emilia, Modena, Italy;3. Neonatal Intensive Care Unit, S. Orsola-Malpighi University Hospital, Bologna, Italy Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy;4. Department of Biomedical and Neuromotor Sciences, Unit of Hygiene and Biostatistics, University of Bologna, Bologna, Italy;5. Pediatric and Neonatology Unit, Imola Hospital, Imola, Italy |