1. Department of Oncodermatology; Institut Universitaire du Cancer - Toulouse Oncopole; Toulouse France
2. Hon. Pr. of the University of Franche-Comté; Nail Disease Centre; Cannes France
3. Dermatology, Department of Experimental, Diagnostic and Specialty Medicine; University of Bologna; Bologna Italy
4. Dermatology Service; Memorial Sloan Kettering Cancer Center; New York NY USA
5. Department of Dermatology; Institut Gustave Roussy; Villejuif France
6. Department of Dermatology; Paris-Sud University; Orsay France