1. Division of Cardiology, Department of Medicine (O.O.M., M.E.A.), Johns Hopkins University School of Medicine, Baltimore, MD.
2. Department of Medicine (M.E.A.), Johns Hopkins University School of Medicine, Baltimore, MD.
3. Department of Physiology and Program in Cellular and Molecular Medicine (M.E.A.), Johns Hopkins University School of Medicine, Baltimore, MD.
4. Department of Genetic Medicine (M.E.A.), Johns Hopkins University School of Medicine, Baltimore, MD.