1. Paediatric Tropical and Infectious Diseases, Department of Paediatrics, Hospital Universitario La Paz, Madrid, Spain
2. RITIP (Red de Investigación Translacional en Infectología Pediátrica), Spain
3. Department of Microbiology, Hospital Universitario La Paz, Madrid, Spain
4. Department of Neonatology, Hospital Universitario La Paz, Madrid, Spain
5. Department of Paediatric Haematology and Oncology, Hospital Universitario La Paz, Madrid, Spain
6. Paediatric Intensive Care Unit, Hospital Universitario La Paz, Madrid, Spain
7. Department of Hepatology and Liver Transplantation, Hospital Universitario La Paz, Madrid, Spain
8. Department of Nephrology and Kidney Transplantation, Hospital Universitario La Paz, Madrid, Spain
9. Paediatric Intestinal Rehabilitation and Bowel Transplantation, Hospital Universitario La Paz, Madrid, Spain
10. Department of Biostatistics, Hospital Universitario La Paz, Madrid, Spain