1. Department of Dermatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
2. Department of Dermatology, University Hospital Würzburg, Würzburg, Germany.
3. Interfaculty Bioinformatics Unit and SIB Swiss Institute of Bioinformatics, University of Bern, Bern, Switzerland.
4. Department of Dermatology, University Hospital Düsseldorf, Düsseldorf, Germany.
5. Department of Rheumatology, Immunology and Allergology, Bern University Hospital, University of Bern, Bern, Switzerland.
6. Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland.
7. Institute of Molecular Systems Biology, ETH, Zurich, Switzerland.