Maria J. Guimarães, Department of Dermatology and Venereology, Hospital de Braga, Braga, Portugal Rita Macieira, Microbiology, Department of Pathology and Centre for Health Technology and Services Research (CINTESIS), Faculty of Medicine, University of Porto, Porto, Portugal Filomena Azevedo, Department of Dermatology and Venereology, Centro Hospitalar Universitário de São João, Porto, Portugal Carmen Lisboa, Microbiology, Department of Pathology and Centre for Health Technology and Services Research (CINTESIS), Faculty of Medicine, University of Porto, Porto; Department of Dermatology and Venereology, Centro Hospitalar Universitário de São João, Porto, Portugal