1. AP-HP, Bichat-Hospital, Department of Pathology; Paris Descartes University; Paris France
2. AP-HP, Bichat-Hospital, Department of Dermatology; Paris Diderot University; Paris France
3. AP-HP, Bichat-Hospital, Department of Pathology; Paris Diderot University; Paris France
4. Department of Pathology, Cliniques Universitaires Saint-Luc; Université Catholique de Louvain; Brussels Belgium