1. Clinical Microbiology and Infectious Diseases Department Hospital General Universitario Gregorio Marañón Madrid Spain
2. Instituto de Investigación Sanitaria Gregorio Marañón Madrid Spain
3. Medicine Department School of Medicine Universidad Complutense de Madrid Madrid Spain
4. CIBER Enfermedades Respiratorias CIBERES (CB06/06/0058) Madrid Spain
5. Intensive Care Unit Hospital General Universitario Gregorio Marañón Madrid Spain
6. Anaesthesiology and Reanimation Department Hospital General Universitario Gregorio Marañón Madrid Spain