1 Division of Allergy and Immunology, Department of Dermatology, Venereology and Allergy, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany.
2 Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Kiel, Germany.
3 A Leibniz Institute, Deutsches Rheuma-Forschungszentrum Berlin, Berlin, Germany.