1. Institute for Clinical and Experimental Surgery, University of Saarland, Homburg, Germany.
2. Department of Plastic and Reconstructive Surgery, University of Berne, Switzerland.
3. Institute for Surgical Research, University of Basel, Switzerland.
4. Department of Plastic and Reconstructive Surgery, University of Basel, Switzerland.
5. Department of Plastic and Hand Surgery/Burn Center, University of Bochum, Germany.
6. Department of Plastic and Hand Surgery, University of Freiburg, Germany.
7. Department of Oral and Maxillofacial Surgery, Medical University of Hannover, Germany.
8. FMF Freiburger Materialforschungszentrum, Freiburg, Germany.
9. Department of Plastic, Reconstructive and Hand Surgery/Burn Center, University of Heidelberg, Ludwigshafen, Germany.
10. Department of Experimental Surgery, University of Rostock, Schillingallee 70, Rostock, Germany.