1 Department of Dermatology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland; " Tattoos Consultation Unit", Department of Dermatology, Hôpital Bichat - Claude Bernard, Paris, France. Electronic address: [email protected].
2 Department of Dermatology and Dermatopathology, Strasbourg University Hospital, Strasbourg, France.
3 Department of Dermatology, Colmar University Hospital, Colmar, France.