1. Institute of Pharmacology; University of Bern; Bern Switzerland
2. Department of Dermatology and Centre for Biological Signaling Studies (BIOSS); University Medical Center Freiburg; Freiburg Germany
3. Centre of Laboratory Medicine; Inselspital; Bern University Hospital; Bern Switzerland
4. Department of Dermatology; Inselspital; Bern University Hospital; University of Bern; Bern Switzerland