Department of Medicine, University of Mississippi, Jackson, MS, USA. Division of Cardiology, Duke University Medical Center, Durham, NC, USA. Department of Medical Statistics, University Medical Center Göttingen, Göttingen, Germany. DZHK (German Center for Cardiovascular Research), partner site Göttingen, Göttingen, Germany. Wroclaw Medical University, Wroclaw, Poland. Vifor Pharma Ltd., Glattbrugg, Switzerland. Department of Cardiology, University and Civil Hospital, Brescia, Italy. Central Michigan University, Mount Pleasant, Michigan. University of Warwick, Coventry, UK. Centre for Clinical and Basic Research, Department of Medical Sciences, IRCCS San Raffaele Pisana, Rome, Italy. Department of Cardiology, Bellvitge University Hospital, Barcelona, Spain. IDIBELL (Institute of Biomedical Investigation of Bellvitge), University of Barcelona, Hospitalet de Llobregat, Barcelona, Spain. Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. National and Kapodistrian University of Athens, Athens University Hospital Attikon, Athens, Greece. Department of Cardiology (CVK); and Berlin Institute of Health Center for Regenerative Therapies (BCRT). DZHK (German Center for Cardiovascular Research) Berlin partner site, Charité Universitätsmedizin Berlin, Germany.