1. Clinical Microbiology and Infectious Diseases; Hospital General Universitario Gregorio Marañon; Madrid Spain
2. CIBER de Enfermedades Respiratorias (CIBERES); Madrid Spain
3. Department of Medicine; Universidad Complutense de Madrid; Madrid Spain
4. Clinical Microbiology; Hospital de Ciudad Real; Ciudad Real Spain
5. Transplant Infectious Diseases Service; ISMETT; Palermo Italy
6. Department of Infectious and Tropical Diseases; Ospedale di Circolo-Fondazione Macchi; Università dell'Insubria; Varese Italy