Affiliation: | 1. Department of Dermatology and Dermatopathology, University Hospitals Saint-Pierre and Brugmann, Université Libre de Bruxelles, Brussels, Belgium;2. Department of Pathology, Institut Bordet, Université Libre de Bruxelles, Brussels, Belgium;3. Department of Dermatology, University Hospital Sart Tilman, Université de Liège, Liège, Belgium |