1. Deutsches Herzzentrum der Charité, Department of Cardiothoracic and Vascular Surgery , Berlin, Germany
2. Charité- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin , Berlin, Germany
3. DZHK (German Center of Cardiovascular Research) , Partner Site Berlin , Berlin, Germany
4. Department of Cardiothoracic Surgery, RT, Rigshospitalet, Copenhagen University Hospital , Copenhagen, Denmark
5. Center on Ageing and Mobility, University Hospital and University of Zurich , Zurich, Switzerland
6. University College London, Comprehensive Clinical Trials Unit , London, Great Britain
7. Semmelweis University, Department of Anesthesiology and Intensive Therapy , Budapest, Hungary
8. Faculty of Health Sciences Brandenburg, University of Potsdam, Department of Rehabilitation Medicine , Potsdam, Germany
9. Klinik am See, Rehabilitation Centre for Internal Medicine , Rüdersdorf, Germany
10. Paracelsus Medical University Salzburg, Institute of Sports Medicine, Prevention and Rehabilitation , Salzburg, Austria
11. Ludwig Boltzmann Institute for Digital Health and Prevention , Salzburg, Austria
12. REHA-Zentrum Salzburg, University Hospital Salzburg , Austria