1. Infectious Diseases, Hospital Universitario Bellvitge, IDIBELL, Universidad de Barcelona
2. Department of Infectious Diseases, Hospital Universitario Donostia, San Sebastián
3. Department of Infectious Diseases, Hospital Clínic i Provincial
4. Department of Microbiology and Infectious Diseases, Hospital General Universitario GregorioMarañón
5. Department of Infectious Diseases, Hospital de Basurto, Bilbao
6. Unit of Infectious Diseases, Hospital Universitario de La Paz
7. Department of Infectious Diseases, Hospital Universitario Virgen del Rocío
8. Department of Infectious Diseases, Hospital Universitario Vall d'Hebron
9. Department of Internal Medicine and Infectious Diseases, Hospital del Mar
10. Unit of Infectious Diseases, Department of Internal Medicine, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona
11. Department of Internal Medicine, Hospital El Bierzo, Ponferrada
12. Department of Infectious Diseases, Consorcio Sanitario Parc Taulí, Sabadell
13. Department of Infectious Diseases, Hospital Universitario Virgen Macarena, Sevilla
14. Unit of Infectious Diseases, Department of Internal Medicine, Hospital Universitario Son Espases, Palma
15. Unit of Infectious Diseases, Department of Internal Medicine, Hospital Universitario Puerta de Hierro, Madrid
16. Unit of Nosocomial Infection, Hospital Universitario Arnau de Vilanova, Lérida, Spain