1. Hospital Clínico Universitario Lozano Blesa de Zaragoza, Microbiology Department, University of Zaragoza, Instituto de Investigación Sanitaria de Aragón, 50009 Zaragoza, Spain
2. Hospital Clínico Universitario Lozano Blesa de Zaragoza, 50009 Zaragoza, Spain
3. Hospital Clínico Universitario Lozano Blesa de Zaragoza, Microbiology Department, University of Zaragoza, 50009 Zaragoza, Spain
4. Microbiology Department, University of Zaragoza, 50009 Zaragoza, Spain