1. From the Department of Internal Medicine/Cardiology, Deutsches Herzzentrum Berlin, Berlin, Germany (S.K., R.M., E.F.); Department of Radiology, Johns Hopkins University, Baltimore, Md (S.K.); Department of Internal Medicine, Division of Cardiology, University of Turin, Turin, Italy (A.C.); and Division of Imaging Sciences, King’s College London, London, UK (E.N.).