1. Department of Dermatology Medical Faculty Medical Center – University of Freiburg Freiburg Germany
2. Faculty of Biology University of Freiburg Freiburg Germany
3. University Hospital Regensburg Regensburg Germany
4. Essen University Hospital Essen Germany
5. Department of Biology University of Fribourg Fribourg Switzerland
6. Laboratory of Tissue Repair and Regeneration Faculty of Dentistry University of Toronto Toronto ON Canada
7. Freiburg Institute for Advanced Studies (FRIAS) University of Freiburg Freiburg Germany