Institution: | 1. Department of Dermatology and Venereology, Hospital de S?o Jo?o EPE, Porto;2. Faculty of Medicine of Porto (u38/FCT), Porto;3. Department of Dermatology and Venereology, Hospitais da Universidade de Coimbra, Coimbra;4. Department of Pathology, Hospital de S?o Jo?o EPE, Porto, Portugal |