1. Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University of Salzburg, Salzburg, Austria
2. Strait Access Technologies, Cape Town, South Africa
3. Department of Cardiovascular Surgery, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
4. Wake Forest Institute of Regenerative Medicine, Winston-Salem, NC, USA
5. Chris Barnard Department of Cardio-Thoracic Surgery, University of Cape Town, Cape Town, South Africa