1 Department of Dermatology, Saint-Eloi Hospital, University Hospital of Montpellier, 80 Avenue A. Fliche, 34295, Montpellier Cedex 5, France. d-bessis@chu-montpellier.fr.
2 INSERM U1058, Montpellier, France. d-bessis@chu-montpellier.fr.
3 Department of Internal Medicine and Dermatology, Hospital Centre of Perpignan, Perpignan, France.
4 Department of Paediatrics, Division of Paediatric Infectious Diseases, Arnaud de Villeneuve Hospital, University Hospital of Montpellier, Montpellier, France.