1 Department of Dermatology, Saint-Louis Hospital, Paris, France.
2 Department of Dermatology, University Hospital, Besançon, France.
3 Department of Pathology, University Hospital, Besançon, France.
4 Department of Dermatology, Lausanne University Hospital CHUV, Lausanne, Switzerland; University of Lausanne, Lausanne, Switzerland; Department of Dermatology, University Hospital Zurich, Zurich, Switzerland.
5 Department of Dermatology, Rouen University Hospital, Rouen, France.
6 Department of Pathology, Rouen University Hospital, Rouen, France.
7 Department of Pharmacology and Tumor Genomics, Saint-Louis Hospital, Paris, France; University of Paris, Paris, France.
8 Hematology Laboratory, Saint-Louis Hospital, Paris, France.
9 Department of Pathology, Saint-Louis Hospital, Paris, France.