1. St John's Institute of Dermatology Guy's and St Thomas’ NHS Foundation Trust London UK
2. Department of Dermatology Bürgenstock Medical Center Obbürgen Switzerland
3. Department of Dermatology Karolinska University Hospital Solna Sweden
4. Department of Dermatology University of Brescia Brescia Italy
5. Department of Dermatology University Hospital Infanta Leonor de Madrid Madrid Spain
6. Comprehensive Center for Inflammation Medicine University of Luebeck Luebeck Germany
7. LEO Pharma A/S Ballerup Denmark
8. Dermatology Private Practice Tremelo Belgium