1. Department
of Microbiology, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
2. Center
for Research in Health Technologies and Information Systems, Faculty
of Medicine, University of Porto, 4200-319 Porto, Portugal
3. School D. Maria II, Rua da Alegria, 4760-067 Vila Nova de Famalicão, Portugal
4. Department
of Clinical Pathology, Centro Hospitalar de São João, 4200-319 Porto, Portugal