1. Department of Medical Sciences Uppsala University SE‐751 85 Uppsala Sweden
2. Ablynx NV Zwijnaarde Belgium
3. Maastricht University Medical Center Maastricht the Netherlands
4. Stiefel, a GSK company Research Triangle Park NC U.S.A
5. Istituto Dermopatico dell'Immacolata Rome Italy
6. Instituto Dermatológico Santo Domingo Dominican Republic
7. University Hospital Münster Münster Germany