1. Department of Cardiology, University of Groningen, University Medical Center Groningen, The Netherlands (J.E.E., J.M.t.M., K. Damman, D.J.v.V., R.A.d.B., I.E.S., K.W.S., A.A.V.).
2. Sphingotec GmbH, Hennigsdorf, Germany (J.S., A.B.).
3. Division of Cardiology and Metabolism—Heart Failure, Cachexia and Sarcopenia, Department of Cardiology; Berlin-Brandenburg Center for Regenerative Therapies; Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK) Berlin; Charité Universitätsmedizin Berlin, Germany (S.D.A.).
4. Department of Cardiology and Pneumology, University Medical Center Göttingen, Germany (S.D.A.).
5. Department of Clinical Science, University of Bergen, Norway (K. Dickstein).
6. Department of Cardiology, Stavanger University Hospital, Norway (K. Dickstein).
7. School of Medicine Centre for Cardiovascular and Lung Biology, Division of Medical Sciences, University of Dundee, Ninewells Hospital and Medical School, United Kingdom (C.C.L.).
8. Institute of Cardiology, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Italy (M.M.).
9. Department of Cardiovascular Sciences, University of Leicester, United Kingdom (N.J.S., L.L.N.).
10. NIHR Leicester Biomedical Research Centre, Glenfield Hospital, United Kingdom (N.J.S., L.L.N.).