1. Unit of Infectious Diseases, Hospital Universitario ‘12 de Octubre’, Instituto de Investigación Hospital ‘12 de Octubre’ (i + 12), Universidad Complutense, Madrid, Spain
2. Department of Infectious Diseases, Corporació Sanitària Parc Taulí, Sabadell, Spain
3. Department of Microbiology, Hospital Universitari de Bellvitge, Universitat de Barcelona, L’Hospitalet de Llobregat, Barcelona, Spain
4. Department of Infectious Diseases, Hospital Universitari Vall d’Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
5. Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario ‘Gregorio Marañón’, Universidad Complutense, Madrid, Spain
6. Department of Infectious Diseases, Hospital Universitari de Bellvitge, Universitat de Barcelona, L’Hospitalet de Llobregat, Barcelona, Spain