1. Department of Dermatology and Center for Chronic Pruritus University Hospital Münster Münster Germany
2. Occupational Medicine Department of Dermatology University of Heidelberg Heidelberg Germany
3. Department of Clinical Sciences Lund Dermatology and Venereology and Skane University Hospital Lund Sweden
4. Department of Dermatology Oslo University Hospital University of Oslo Oslo Norway
5. Institute of Dermatology F. Policlinico A. Gemelli IRCCS Università Cattolica del Sacro Cuore Rome Italy
6. Department of Dermatology University Hospital of Brest Brest France
7. Department of Dermatology Aydin Adnan Menderes University Aydın Turkey
8. Moscow Scientific and Practical Center of Dermatovenerology and Cosmetology Moscow Russia
9. Department of Dermatology, Venereology and Allergology Wroclaw Medical University Wroclaw Poland
10. Department of Dermatology University of Rzeszów Rzeszów Poland
11. Department of Dermatology School of Medicine, University of Information Technology and Management Rzeszow Poland
12. Department of Dermatology Medical University of Graz Graz Austria
13. Department of Dermatology and Allergy Charité – Universitätsmedizin Berlin Berlin Germany
14. Department of Dermatology Kantonsspital Aarau Aarau Switzerland
15. Department Dermatology Sant Pau Hospital Barcelona Spain
16. Department of Dermatology University Hospital and Faculty of Medicine University of Coimbra Coimbra Portugal
17. Institute of Medical Informatics University of Münster Münster Germany