1. National and Kapodistrian University of Athens Medical School, Athens University Hospital Attikon, Athens, Greece (G.F., D.F.).
2. Institute of Heart Diseases, Wroclaw Medical University; and Institute of Heart Diseases, University Hospital, Wroclaw, Poland (P.P., E.A.J.).
3. Department of Cardiology and Berlin Institute of Health Center for Regenerative Therapies, German Centre for Cardiovascular Research Partner Site Berlin, Charité Universitätsmedizin Berlin, Germany (S.D.A.).
4. University of Mississippi Medical Center, Jackson (J.B.).
5. Vifor Pharma Ltd, Glattbrugg, Switzerland (V.F., S.W.).
6. Department of Clinical Research, SOCAR Research SA, Nyon, Switzerland (B-A.K.).
7. London School of Hygiene and Tropical Medicine, University College London, UK (B-A.K.).
8. Department of Renal Medicine, King’s College Hospital, London, UK (I.C.M.).
9. Department of Cardiology, University and Civil Hospital, Brescia, Italy (M.M.).
10. Centre for Clinical and Basic Research, Department of Medical Sciences, IRCCS San Raffaele Pisana, Rome, Italy (G.R.).
11. Department of Cardiology, University Heart Center, University Hospital Zurich and University of Zurich, Switzerland (F.R.).
12. Department of Cardiology, University Medical Center Groningen, the Netherlands (P.v.d.M.).