1. Department of Dermatology, Venereology, and Allergology, St Josef Hospital, Ruhr-University Bochum, Bochum, Germany
2. Department of Dermatology, Medical Center Klinikum Darmstadt, Teaching Hospital Goethe-University Frankfurt, Darmstadt, Germany
3. Department of Dermatology, Erasmus University Medical Center, Rotterdam, the Netherlands
4. Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
5. 4th Department of Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece
6. Division of Dermatology, Women’s College Hospital, University of Toronto, Toronto, Ontario, Canada
7. Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Wroclaw, Poland
8. Department of Dermatology, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
9. AbbVie Inc, North Chicago, Illinois
10. Department of Dermatology, Zealand University Hospital, Roskilde, Denmark
11. Department of Dermatology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane, Dessau, Germany
12. Department of Venereology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane, Dessau, Germany
13. Department of Allergology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane, Dessau, Germany
14. Department of Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane, Dessau, Germany