1. Department of Internal Medicine I (G.C.R.), University Hospital Würzburg, Germany.
2. Immunocardiology Laboratory, Comprehensive Heart Failure Center (G.C.R.), University Hospital Würzburg, Germany.
3. Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD (D.C.).
4. W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD (D.C.).
5. Department of Translational Research, Comprehensive Heart Failure Center (C.M.), University Hospital Würzburg, Germany.
6. Division of Cardiology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO (S.D.P.).