1. Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
2. Department of Dermatology, University of Cologne, 50931 Cologne, Germany.
3. Department of Anatomy and Cell Biology, Faculty of Medicine, Technion-Israel Institute of Technology, 31096 Haifa, Israel.
4. Institute for Biomechanics, ETH Zurich, 8093 Zurich, Switzerland.
5. Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany.
6. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.