1. Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville, University Hospitals Virgen del Rocío/CSIC/University of Seville;
2. Vall d’Hebron University Hospital;
3. University Clinic Hospital, Barcelona;
4. Maimonides Biomedical Research Institute of Cordoba, Reina Sofia University Hospital (Clinic Unit of Infectious Diseases and Clinic Unit Preventive Medicine and Public Health), University of Cordoba;
5. Cruces University Hospital, Bizkaia;
6. University Hospital Ramón y Cajal, Madrid;
7. Gregorio Marañón University Hospital, Instituto de Investigación Sanitaria Hospital Gregorio Marañón, CIBER Enfermedades Respiratorias-CIBERES, and Department of Medicine, School of Medicine, Universidad Complutense de Madrid, Spain Hospital Majadahonda, Madrid;
8. University Hospital of Bellvitge, Infectious Diseases Research Group, L’Hospitalet de Llobregat, Barcelona;
9. University Hospital Marqués de Valdecilla, Santander;
10. University Hospital La Fe, Valencia;
11. University Hospital 12 de Octubre, Instituto de Investigación Biomédica i+12, Madrid; and
12. University Hospital Virgen Macarena, Seville, Spain