1. From the Department of Cardiovascular Medicine (S.R.K.), Cleveland Clinic Foundation (A.K.), Cleveland; Smidt Heart Institute, Cedars–Sinai Medical Center, Los Angeles (R. Makkar); Columbia Interventional Cardiovascular Care (M.L.), Columbia University Medical Center (S.K.), New York; Leipzig Heart Center, University of Leipzig, Leipzig (M.A.-W.), Medizinische Klinik und Poliklinik I, Klinikum der Universität München and German Center for Cardiovascular Research (DZHK), Munich Heart Alliance, Munich (S.M...