1 Berlin Institute of Health Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Berlin, Germany.
2 German Heart Center of the Charite, (Virchow Klinikum), Charité-Universitätsmedizin Berlin, and German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Germany.
3 Centre for Academic Primary Care, Lifespan and Population Health Unit, School of Medicine, University of Nottingham, UK.
4 Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece.