1. Central Dermatology; St Louis MO USA
2. Oregon Medical Research Center; Portland OR USA
3. Department of Medicine (Dermatology); David Geffen School of Medicine; Los Angeles CA USA
4. SKiN Centre for Dermatology and Queen's University; Peterborough ON Canada
5. Institute for Health Services Research in Dermatology and Nursing; University Medical Center Hamburg; Hamburg Germany
6. Eli Lilly and Company; Indianapolis IN USA
7. University of Cincinnati; Cincinnati OH USA
8. Dermatologikum Hamburg and SCIderm Research Institute; Hamburg Germany