1 Dermatology Department, Victor Dupouy Hospital, Argenteuil, France.
2 Dermatology Department, Allergology, and Venereology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland.
3 "Tattoo" Consultation, Department of Dermatology, Bichat-Claude Bernard Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France.
4 Dermatology Department, Hôpital d'Instruction des Armées Bégin, Saint Mandé, France.
5 Dermatology Department, Dipartimento di ScienzeMediche, Chirurgiche e Neuroscienze, A.O.U.S. Le Scotte - UniversitàdegliStudi di Siena, Siena, Italy.
6 Dermatology Clinic, University of Catania, Catania, Italy.
7 Dermatology Department, Saint-Joseph Hospital, Marseille, France.