1. Department of DermatologyRoyo Villanova Hospital, Aragon Health Sciences Institute (IACS) Zaragoza Spain
2. Department of PsychologyUniversity of Zaragoza, Aragon Health Sciences Institute (IACS) Zaragoza Spain
3. Bioinformation Group, Aragon Health Sciences Institute (IACS) Zaragoza Spain
4. Department of DermatologyJustus Liebig University Giessen Germany
5. Institute of Medical PsychologyJustus Liebig University Giessen Germany
6. Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health DisordersInnlandet Hospital Trust Brumunddal Norway
7. Department of Dermatology and Wound HealingCardiff University School of Medicine Cardiff UK
8. Department of DermatologyULB Hospital ERASME Brussels Belgium
9. Section of BiostatisticsUniversity of Oslo Oslo Norway
10. Department of DermatologyWroclaw Medical University Wroclaw Poland
11. Department of DermatologyUniversity Hospital of Brest Brest France
12. Department of DermatologyZealand University Hospital Roskilde Denmark
13. Department of Psychiatry and PsychosomaticsI. M. Sechenov First Moscow State Medical University Moscow Russia
14. Clinical Epidemiology UnitIstituto Dermopatico dell’Immacolata Rome Italy
15. Department of Dermatology and AllergologyUniversity of Szeged Szeged Hungary
16. Department of DermatologySisli Etfal Teaching and Research Hospital Istanbul Turkey
17. Department of Medical PsychologyRadboud University Medical Centre Nijmegen The Netherlands
18. Department of DermatologyStavanger University Hospital Stavanger Norway
19. Department of DermatologyOslo University Hospital and Institute of Clinical Medicine, University of Oslo Oslo Norway