1. Epidemiology Unit, Health Research Institute‐Fundación Jiménez Díaz University Hospital Universidad Autónoma de Madrid Madrid Spain
2. Paediatric Infectious Diseases Department La Paz University Hospital, IdiPaz Foundation Madrid Spain
3. CIBERINFEC Madrid Spain
4. Paediatric Infectious Diseases, Rheumatology and Immunology Unit, Virgen del Rocío University Hospital, Instituto de Biomedicina de Sevilla Universidad de Sevilla/CSIC Sevilla Spain
5. IBiS Sevilla Spain