1. Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
2. Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
3. Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
4. Clinical Unit for Infectious Diseases, Microbiology and Preventive Medicine, Hospital Universitario Virgen Macarena. Deparment of Microbiology and Medicine, University of Seville, Seville, Spain
5. Microbiology Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), University Hospital Reina Sofía, University of Córdoba, Cordoba, Spain
6. Reference and Research Laboratory for Antibiotic Resistance and Health Care Infections, National Centre for Microbiology, Institute of Health Carlos III, Majadahonda, Madrid, Spain
7. Microbiology Department, Sant Pau Hospital, Autonomous University of Barcelona (Bellaterra), Barcelona, Spain