1 Center of Evidence-Based Healthcare, University Hospital Carl Gustav Carus and Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
2 Department of Dermatology, University Allergy Center, Carl Gustav Carus Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
3 Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany.
4 Center for Inflammatory Skin Diseases, Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany.
5 Clinics for Dermatology, Elbe Klinikum Buxtehude, Buxtehude, Germany.
6 Clinics and Outpatient Clinics for Dermatology and Allergy, LMU Munich, Munich, Germany.
7 Practice Dr. med. Franca Wiemers, Leipzig, Germany.
8 Occupational Dermatology, Department of Dermatology, University of Heidelberg, Heidelberg, Germany.
9 Institute for Health Services Research in Dermatology Hamburg, University Medical Center Hamburg Eppendorf, Hamburg, Germany.
10 CMSS - Company for Medical Study and Service, Selters/Westerwald, Germany.
11 Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany.
12 Practice Dr. med, Anika Hünermund and Mario Pawlak, Heilbad Heiligenstadt, Germany.
13 Department of Dermatology, Ruprecht-Karls University Heidelberg, Heidelberg, Germany.