1. Clinic for Plastic Surgery and Hand Surgery; University Hospital Zurich; Zurich Switzerland
2. Division of Surgical Research; University Hospital Zurich; Zurich Switzerland
3. Clinic for Cardiovascular Surgery; University Hospital Zurich; Zurich Switzerland
4. Division of Cardiothoracic Surgery; University of Cape Town; Cape Town South Africa
5. Institute for Regenerative Medicine, University of Zurich; Zurich Switzerland
6. Zurich Center for Integrative Human Physiology (ZIHP); Zurich Switzerland