1. From the Infectious Diseases and Systemic Inflammatory Response in Pediatrics, Pediatric Infectious Diseases Department, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
2. Centre for Biomedical Network Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
3. Departament de Cirurgia i Especialitats Medicoquirúrgiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
4. Translational Research Network in Pediatric Infectious Diseases (RITIP)
5. Centro de Investigación Biomédica en Red en Enfermedades Infecciosas (CIBERINFEC), Madrid, Spain
6. Pediatric Infectious Diseases Unit, Hospital Universitario La Paz
7. La Paz Research Institute (IdiPAZ), Universidad Autónoma de Madrid (UAM)
8. Department of Pediatrics, Hospital de Donostia, San Sebastián, Spain
9. Department of Pediatrics, Hospital Infanta Sofía, Madrid, Spain
10. Pediatric Infectious Diseases and Immunodeficiencies Unit, Hospital Universitari Vall d’Hebron, Vall d’Hebron Research Institute, Universitat Autònoma de Barcelona, Spain
11. Department of Pediatrics and Neonatal Unit, Hospital Universitario Arnau de Vilanova, Lleida, Spain
12. Department of Pediatrics, Hospital Sant Llàtzer, Palma de Mallorca, Spain
13. Department of Pediatrics, Hospital de Pontevedra, Pontevedra, Spain
14. Neonatal Intensive Care Unit, Biomedical Research and Innovation Institute of Cádiz (INiBICA), Research Unit, Hospital Puerta del Mar, Cádiz, Spain
15. Department of Pediatrics and Neonatal Unit, Hospital General de Cataluña, Barcelona, Spain
16. Pediatric Infectious Diseases Unit, Hospital Universitario 12 de Octubre, Universidad Complutense, Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
17. Molecular Microbiology Unit, Hospital Universitari Sant Joan de Déu
18. Universitat Ramon Llull, Barcelona, Spain; and
19. Department of Neonatology, Hospital Sant Joan de Déu, Neonatal Brain Group, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.