Affiliation: | (1) Paediatric Intensive Care Unit, Department of Paediatrics, Hospital Universitario Central de Asturias, University of Oviedo, Celestino Villamil s/n, 33006 Oviedo, Asturias, Spain;(2) Paediatric Day Care Center, Servicio de Salud del Principado de Asturias, Lugo de Llanera, Asturias, Spain;(3) Paediatric Day Care Center, Servicio de Salud del Principado de Asturias, El Cristo, Oviedo, Asturias, Spain |