[1] Univ Hosp Padua, Dept Womens & Childrens Hlth, Pediatr Intens Care Unit, Padua, Italy
[2] Univ Padua, PhD Sch, Padua, Italy
[3] SickKids, Dept Paediat Crit Care, Paediatr Crit Care Fellowship, Toronto, ON, Canada
[4] Dept Cardiac Thorac Vasc Sci & Publ Hlth, Unit Biostat Epidemiol & Publ Hlth, Padua, Italy
[5] Univ Turin, Dept Publ Hlth & Pediat, Turin, Italy
[6] Univ Hosp Padua, Pediat Emergency Dept, Dept Womens & Childrens Hlth, Padua, Italy
[7] Azienda Osped Univ Padova, Dept Womens & Childrens Hlth, Via Giustiniani 2, I-35128 Padua, Italy