1. Neonatal Intensive Care UnitPuerta del Mar University HospitalCádiz Spain
2. Pediatric Intensive Care UnitPuerta del Mar University HospitalCádiz Spain
3. Neonatal Intensive Care UnitTorrecárdenas University HospitalAlmería Spain
4. Department of Maternal and Child Health and Radiology, School of MedicineUniversity of CádizCádiz Spain