1. CentroDerm GmbH; Wuppertal Germany
2. Faculty of Health; University Witten/Herdecke; Witten Germany
3. MensingDerma Research GmbH; Hamburg Germany
4. ProDerma; Dülmen Germany
5. Department of Dermatology; University Hospital Carl Gustav Carus; Technical University Dresden; Dresden Germany
6. Department of Dermatology; Hospital Clinico Virgen de la Victoria; Malaga Spain
7. University of Valencia; Valencia Spain
8. Department of Dermatology; Hospital Universitari i Politécnic la Fe; Valencia Spain
9. Biofrontera Bioscience GmbH; Leverkusen Germany
10. Hospital Clinic de Barcelona; Barcelona Spain
11. University of Barcelona; Barcelona Spain
12. Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Barcelona Spain