1. National Centre for Microbiology; Instituto de Salud Carlos III; Madrid Spain
2. Hospital San Joan de Deu; Barcelona Spain
3. Hospital Santa Creu i Sant Pau; Barcelona Spain
4. Hospital La Paz; Madrid Spain
5. Hospital Gran Canaria Dr Negrín; Las Palmas de Gran Canaria Spain
6. Hospital Severo Ochoa; Madrid Spain
7. Hospital Meixoeiro; Vigo Spain
8. Hospital Virgen de la Arrixaca; Murcia Spain
9. Hospital Cruces; Bilbao Spain