A Medina1, V Modesto I Alapont2, P Del Villar-Guerra3. 1. Pediatric Intensive Care Unit, Department of Pediatrics, Hospital Universitario Central de Asturias, Oviedo, Spain. Electronic address: amedinavillanueva@gmail.com. 2. Pediatric Intensive Care Unit, Department of Pediatrics, Hospital Universitari i Politècnic La Fe, València, Spain. 3. Department of Paediatric, Complex Hospital of Segovia, Segovia, Spain.