1. Dermatologikum Hamburg and SCIderm Research Institute; Hamburg Germany
2. SKiN Centre for Dermatology; Queen's University and Probity Medical Research; Peterborough Ontario Canada
3. Whipps Cross University Hospital; London UK
4. The Royal London Hospital; London UK
5. George Washington University; School of Medicine; Washington DC USA
6. Southern California Dermatology; Santa Ana CA USA
7. Celgene Corporation; Summit NJ USA
8. Cardiff University and University Hospital of Wales; Wales UK
9. Division of Dermatology; Women's College Hospital; Toronto Ontario, Canada
10. Division of Dermatology; Department of Medicine; University of Toronto; Toronto Ontario, Canada