1. Traumacenter Linz, Teaching Hospital of the Paracelsus Medical University Salzburg, Linz, Austria
2. Plastic, Aesthetic and Reconstructive Surgery Sanitaetsbetrieb South Tyrol (SABES), Bolzano, Italy
3. Traumacenter Styria, Teaching Hospital of the Medical University Graz, Graz, Austria
4. Centre of Plastic, Aesthetic, Hand and Reconstructive Surgery, University of Regensburg, Regensburg, Germany