1 Department of Plastic, Hand and Reconstructive Surgery, Burn Centre, University of Tübingen, 72076 Tübingen, Germany. Electronic address: fwerdin@gmx.de.
2 Division of Plastic Surgery, University of California San Diego School of Medicine, San Diego, CA, USA.
3 Department of Plastic, Hand and Reconstructive Surgery, Medical School Hannover, Hannover, Germany.