1. Department of Pediatrics, Pediatric Infectious Diseases Unit, Hospital Universitario 12 de Octubre, Universidad Complutense de Madrid, Madrid, Spain. RITIP (Traslational Research Network in Pediatric Infectious Diseases)
2. Pediatric Research and Clinical Trials Unit (UPIC), Instituto de Investigación Hospital 12 de Octubre (imas12), Madrid, Spain
3. Department of Pediatrics, Hospital Clínico Universitario de Valencia, Valencia, Spain
4. Department of Pediatrics, Pediatric Intensive Care Unit, Hospital Universitario 12 de Octubre, Universidad Complutense de Madrid, Madrid, Spain
5. Pediatric Cardiovascular Surgery Unit, Pediatric Institute of the Heart, Hospital Universitario 12 de Octubre, Madrid, Spain
6. Department of Pediatrics Division of Cardiology, Hospital Universitario 12 de Octubre, Madrid, Spain.