1 "Tattoo" Consultation, Department of Dermatology, Bichat-Claude Bernard Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France, [email protected].
2 Department of Dermatology, Allergology and Venereology, Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland, [email protected].
3 Clinique Dermatologique, Hôpitaux Universitaires et Université de Strasbourg, Strasbourg, France.