1. Microbiology Department, Faculty of Medicine, University of Porto, Porto, Portugal
2. Center for Research in Health Technologies and Information Systems (CINTESIS), Porto, Portugal
3. Microbiology Department, Centro Hospitalar São João, Porto, Portugal
4. Servicio de Microbiología, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain