1. Pediatric Intensive Care Unit Service, Research Group of the Pediatric Critical Patient, Institut de Recerca Sant Joan de Déu, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
2. Neonatal Intensive Care Unit Service, Hospital de Sant Joan de Déu Maternal, Fetal and Neonatology Center Barcelona (BCNatal), University of Barcelona, Barcelona, Spain
3. Pediatric Intensive Care Unit, Paediatric Infectious Diseases Research Group, Institut de Recerca Sant Joan de Déu, CIBERESP, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain