1. Institute for Health Services Research in Dermatology and Nursing, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
2. Department of Allergy and Clinical Immunology, Hospices Civils de Lyon, Centre Hospitalier, Lyon Sud, France
3. Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
4. Eli Lilly and Company Ltd, Indianapolis, IN, USA
5. Dermatology Clinic, Our Lady’s Children’s Hospital Crumlin, Dublin, Ireland
6. Department of Dermatology, Medical University of Vienna, Vienna, Austria