Department of Heart Diseases, Medical University, Wroclaw, Poland Department of Cardiology, Center for Heart Diseases, Clinical Military Hospital, Weigla 5 53-114, Wroclaw, Poland piotrponikowski@4wsk.pl. Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Heart Diseases Biomedical Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain. Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany. CHU Pitié-Salpêtrière, Institut de Cardiologie, Paris, France. Lomonosov Moscow State University, Moscow, Russia. Department of Cardiology, King's College Hospital, Denmark Hill, London SE5 9RS, UK. Ukranian Strazhesko Institute of Cardiology, 5, Narodnoko Opolchenia St, Kiev 03151, Ukraine. Maria Cecilia Hospital, GVM Care&Research-E.S. Health Science Foundation, Cotignola, Italy. Vifor Pharma, Glattbrugg, Switzerland. Athens University Hospital Attikon, Athens, Greece. Department of Cardiology, University Hospital Zurich, Switzerland. Department of Innovative Clinical Trials, University Medical Centre Göttingen, Göttingen, Germany.