1. First Department of Medicine, University Medical Centre Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for AngioScience, and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim, Mannheim, Germany (M.B.).
2. Center for Cardiovascular Research, Cardiovascular Division, Washington University in St. Louis, MO (D.L.M.).