1. University Department for Cardiac Surgery, Leipzig Heart Center, Leipzig, Saxony, Germany
2. Department of Cardiothoracic Surgery, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
3. Department of Cardiac Surgery, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
4. Institute of Academic Surgery, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
5. The Baird Institute of Applied Heart and Lung Surgical Research, Sydney, New South Wales, Australia