1. Division of Cardiology and Metabolism, Department of Cardiology (CVK), Berlin-Brandenburg Center for Regenerative Therapies (BCRT), German Centre for Cardiovascular Research (DZHK) partner site Berlin; Charité Universitätsmedizin Berlin; Berlin Germany
2. Department of Cardiology and Pneumology; University Medicine Göttingen (UMG); Göttingen Germany
3. Department of Medicine; University of Mississippi; Jackson MS USA