1. National Centre for Epidemiology Institute of Health Carlos III Madrid Spain
2. CIBER de Enfermedades Infecciosas (CIBERINFEC) Madrid Spain
3. Infectious Diseases Unit, Department of Internal Medicine Hospital Universitario Infanta Sofía Madrid Spain
4. Universidad Europea de Madrid Madrid Spain
5. Infectious Diseases Unit Hospital Universitario Ramón y Cajal Madrid Spain
6. Infectious Diseases Unit Hospital Universitario y Politécnico de La Fe Valencia Spain
7. Infectious Diseases Unit Hospital General Universitario De Elche Alicante Spain
8. University Miguel Hernandez Alicante Spain
9. Instituto de Investigación Sanitaria Gregorio Marañón Madrid Spain
10. Infectious Diseases Unit Hospital Universitari Vall d'Hebron Barcelona Spain