1. Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center and School of Medicine, OH (G.H.B., S.G.A.-K., S.R.).
2. Case Western Reserve University, Cleveland, OH (G.H.B., S.G.A.-K., S.R.).
3. Division of Cardiovascular Diseases, Wayne State University, Detroit, MI (R.D.B.).
4. Center for Cardiology, Cardiology I, Angiology and Intensive Care Medicine, University Medical Center of Johannes Gutenberg University, Mainz, Germany (T.M.).
5. German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany (T.M.).