1. Department of Hand‐ and Plastic Surgery Luzerner Kantonsspital Lucerne Switzerland
2. Plastic and Reconstructive Surgery Department Universitair Ziekenhuis Brussel (University Hospital Brussels), Vrije Universiteit Brussel Brussels Belgium
3. Department of Trauma Surgery University Hospital Zurich Zurich Switzerland
4. Department of Plastic and Hand Surgery Kantonsspital Sant Gallen St. Gallen Switzerland