1. Department of Dermatology Copenhagen University Hospital ‐ Bispebjerg and Frederiksberg Copenhagen Denmark
2. Department of Neurology, Danish Headache Center Copenhagen University Hospital – Rigshospitalet Glostrup Copenhagen Denmark
3. Department of Dermatology Zealand University Hospital Roskilde Denmark
4. Department of Dermatology Aalborg University Hospital Aalborg Denmark
5. Gildhøj Privathospital Copenhagen Brøndby Denmark
6. Department of Dermatology and Allergy Copenhagen University Hospital – Herlev and Gentofte Copenhagen Denmark
7. Department of Dermato‐Venerology Aarhus University Hospital Aarhus Denmark
8. Hareskov Hudklinik Værløse Denmark
9. Hudklinikken Panoptikon Copenhagen Denmark
10. Hudlæge i Vejle Vejle Denmark
11. Hudklinikken i Rødovre Rødovre Denmark
12. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark