1 Department of Dermatology/Allergology, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands. Electronic address: s.vanderkamp@umcutrecht.nl.
2 Department of Dermatology/Allergology, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands.
3 Department of Dermato-Venereology and Wound Healing Centre, University of Copenhagen, Bispebjerg Hospital, Copenhagen, Denmark.
4 Department of Dermatology, Marmara University School of Medicine, Fevzi Cakmak Mah, İstanbul, Turkey.
5 Department of Dermatology, Hospital del Mar Research Institute, Universitat Pompeu Fabra de Barcelona, Barcelona, Spain.
6 Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
7 Urticaria Center of Reference and Excellence (UCARE), Institute of Allergology, Charité, Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany.
8 Secciones Alergia Adultos y Pediátrica, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
9 London Allergy and Immunology Centre, London, United Kingdom.
10 Urticaria Center of Reference and Excellence (UCARE), Institute of Allergology, Charité, Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany; Department of Dermatology, Bahçeşehir University School of Medicine, Istanbul, Turkey.
11 Department of Dermatology, Faculdade de Medicina do ABC, Bairro Sacadura Cabral, Santo André, Brazil.
12 First Department of Dermatology and Venereology, National and Kapodistrian University of Athens A Syggros Hospital, Athens, Greece.
13 Clinic for Dermatology, Elbe Klinikum Buxtehude, Buxtehude, Germany.
14 Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Department of Dermatology, Hiroshima City Hiroshima Citizens Hospital, Naka-ku, Hiroshima, Japan.
15 Department of Dermatology, Marmara University School of Medicine, Fevzi Cakmak Mah, İstanbul, Turkey; Department of Dermatology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey.
16 Department of Dermatology, Sakarya University Faculty of Medicine, Korucuk, Sakarya, Turkey.
17 Department of Dermatology, Erasmus MC, Rotterdam, the Netherlands; Centre for Human Drug Research, Leiden, the Netherlands.
18 Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands.