Affiliation: | 1. Departments of Dermatology and Histopathology, The North West London Hospitals NHS Trust, Harrow, United Kingdom;2. The Pennsylvania State University, University Park, Pennsylvania;3. Dermatopathology Section, Department of Dermatology, Boston University School of Medicine, Massachusetts;4. Service de Dermatologie, CHU Hôpital Pontchaillou, Rennes, France;5. Service de Dermatologie, APHP Hôpital Saint-Louis, Paris, France |