1. Department of Dermatology University Hospital Basel Basel Switzerland
2. Department of Translational Medicine University of Manchester Manchester UK
3. Department of Dermatology & Allergy University Hospital of Basel Basel Switzerland
4. University of Rome G. Marconi Rome Italy
5. Department of Dermatology University Medical Center Mainz Mainz Germany
6. Institute of Primary and Community Care Lucerne Switzerland
7. Department of Health Sciences and Health Policy University of Lucerne Lucerne Switzerland