1. Department of Cardiology and Pneumology University of Göttingen Medical Center Göttingen Germany
2. Divisions of Geriatric Medicine and Endocrinology Saint Louis University School of Medicine St. Louis MO USA
3. San Raffaele Pisana Scientific Institute Rome Italy
4. Department of Cardiology (CVK) and Berlin Institute of Health Center for Regenerative Therapies (BCRT), German Centre for Cardiovascular Research (DZHK) partner site Berlin Charité Universitätsmedizin Berlin Germany