1 Allergy Clinic, Department of Dermatology and Allergy, Gentofte Hospital, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark. Electronic address: lene.heise.garvey@regionh.dk.
2 University of Antwerp, Faculty of Medicine and Health Sciences, Department of Immunology, Allergology, Rheumatology and the Infla-Med Centre of Excellence, Antwerp (Belgium) and Immunology, Allergology, Rheumatology, Antwerp University Hospital, Antwerp, Belgium.