1. Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, 8091 Zurich, Switzerland
2. Department of Plastic and Reconstructive Surgery, Guys and St Thomas Trust, London SE1 7EH, UK
3. Department of Plastic Surgery and Hand Surgery, Gemeinschaftskrankenhaus Havelhoehe, 14089 Berlin, Germany
4. Department of Plastic Surgery, Hand Surgery and Burn Center, University Hospital RWTH Aachen, 52074 Aachen, Germany
5. Department of Surgery, Stadtspital Zürich Triemli, 8063 Zurich, Switzerland
6. Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-University (LMU), 81377 Munich, Germany
7. Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
8. Munich Heart Alliance, German Centre for Cardiovascular Diseases, 80802 Munich, Germany