1. From the Charité, University Medicine Berlin, Campus Virchow Klinikum (CVK), Department of Cardiology, Germany (C.T., S.V.L.)
2. Charité–Universitätsmedizin Berlin, BCRT–Berlin Institute of Health Center for Regenerative Therapies, Germany (C.T., S.V.L.)
3. Charité–Universitätsmedizin Berlin, BCRT–Berlin-Brandenburg Centrum für Regenerative Therapien, Germany (C.T., S.V.L.)
4. Deutsches Zentrum für Herz Kreislauf Forschung (DZHK)–Standort Berlin/Charité, Germany (C.T., S.V.L.)
5. Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL (L.T.C.)
6. Methodist DeBakey Heart and Vascular Center, The Methodist Hospital, Houston, TX (G.T.-A.)
7. Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Cátedra de Cardiología y Medicina Vascular, Monterrey, Nuevo León, Mexico (G.T.-A.).