[1] Univ Padua, Padua, Italy
[2] Angel Hosp, Venice, Italy
[3] OIRM S Anna Childrens Hosp, Turin, Italy
[4] Univ Bari, Bari, Italy
[5] OIRM S Anna, Neonatal Intens Care Unit, Turin, Italy
[6] Gaslini Hosp, Genoa, Italy
[7] Meyer Childrens Hosp, Florence, Italy
[8] Univ Padua, Dept OD Cardiol Vasc & Thorac Sci, Padua, Italy