1 Department of Dermatology, Montpellier University Hospital and Montpellier University, Montpellier, France.
2 Department of Dermatology, Montpellier University Hospital and Montpellier University, Montpellier, France; Department of Pulmonology, Allergology Division, Montpellier University Hospital and Montpellier University, Montpellier, France; IDESP, Institut Desbrest d'Epidémiologie et de Santé Publique, UMR INSERM - Montpellier University, Montpellier, France. Electronic address: Jl-bourrain@chu-montpellier.fr.