1. Department of Cardiology and Berlin Institute of Health Center for Regenerative Therapies (BCRT), German Centre for Cardiovascular Research (DZHK) partner site Berlin, Charité Universitätsmedizin Berlin, Germany (S.D.A.).
2. Institute of Heart Diseases, Wrocław Medical University, Poland (S.D.A.).
3. Department of Medicine, University of Mississippi, Jackson (M.S.U., J.B.).
4. Baylor Scott and White Research Institute, Dallas, TX (J.B.).