1. Division of Surgical Research, University Hospital Zürich, University Zürich, Switzerland
2. Department of Cardiothoracic and Vascular Surgery, German Heart Institute Berlin, Germany
3. Translational Cardiovascular Technologies, Department of Health Sciences, ETH Zürich, Switzerland
4. Department of Cardiovascular Surgery, Charité-Universitätsmedizin Berlin, Germany
5. Institute for Regenerative Medicine (IREM), University of Zurich, Switzerland