1. From the Department of Cardiology, Guy’s and St Thomas’ NHS Trust, London, England (V.O.P., A.I., R.H., L.F., G.C., E.N.); Institute of Experimental and Translational Cardiovascular Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt am Main 60590, Germany (V.O.P., E.N.); Department of Cardiology, Goethe University Hospital Frankfurt, Frankfurt am Main, Germany (V.O.P.); Department of Cardiovascular Imaging, King’s College London, St....