[1] Bambino Gesu Childrens Hosp IRCCS, Neonatal Intens Care Unit, Rome, Italy
[2] Fdn Policlin Univ Agostino Gemelli IRCCS, Dept Woman & Child Hlth & Publ Hlth, Neonatol Unit, Rome, Italy
[3] Univ Cattolica Sacro Cuore, Rome, Italy
[4] San Camillo Forlanini Hosp, Neonatol Unit, Rome, Italy
[5] Gemelli Isola Hosp, Neonatal Intens Care Unit, Rome, Italy