1 Dermatologic Clinic, Faculty of Medicine, University of Strasbourg, University Hospital of Strasbourg, Strasbourg, France, The originally published version of this article is available online at <a href="https://www.doi.org/10.23736/S0392-0488.20.06778-4">https://www.doi.org/10.23736/S0392-0488.20.06778-4</a>.