1 Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria. Electronic address: wurzer_paul@gmx.at.
2 Research Unit Medical-Informatics, RISC Software GmbH, Johannes Kepler University Linz, Hagenberg, Austria.
3 Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Austria.