1. Department of Anesthesia and Microbiology, University Hospital, Spain
2. Department of Anesthesiology, University Hospital, Santiago de Compostela
3. Clinical Management Unit, Alto Deba Hospital, Mondragón
4. Department of Microbiology, Santiago de Compostela University Hospital, Santiago de Compostela
5. Microbiology Department, Santiago de Compostela University Hospital, Santiago de Compostela
6. Department of Anesthesia and Surgical ICU, Santiago de Compostela University Hospital, Santiago de Compostela