1. Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
2. Department of Cardiology, Charité Universitätsmedizin Berlin, Berlin, Germany
3. Berlin-Brandenburg Center for Regenerative Therapies, Charité Universitätsmedizin Berlin, Berlin, Germany
4. German Centre for Cardiovascular Research (DZHK) partner site Berlin, Charité Universitätsmedizin, Berlin, Germany
5. Institute of Health and Wellbeing, University of Glasgow, Glasgow, Scotland
6. Department of Clinical Science, University of Bergen, Stavanger University Hospital, Stavanger, Norway