1 Pediatric Infectious Diseases Unit, Department of Pediatrics, Hospital Universitario 12 de Octubre, Madrid, Spain.
2 Pediatric Infectious Diseases Unit, Department of Pediatrics, Hospital Universitario 12 de Octubre, Pediatric Research and Clinical Trials Unit (UPIC), Instituto de Investigación Sanitaria Hospital 12 de Octubre (IMAS12), Fundación para la Investigación Biomédica del Hospital 12 de Octubre, Madrid, Spain, RITIP (Traslational Research Network in Pediatric Infectious Diseases).
3 Pediatric Intensive Care Unit, Department of Pediatrics, Hospital Universitario 12 de Octubre, School of Medicine, Complutense University of Madrid, Mother-Child Health and Development Network (Red SAMID) of Carlos III Health Institute, Madrid, Spain.
4 Pediatric Cardiology Unit, Department of Pediatrics, Hospital Universitario 12 de Octubre, Madrid, Spain.