1 From the Department of Medicine/Cardiology (D.P.J.) and the Department of Regenerative Medicine and Cell Biology (R.A.N.), Medical University of South Carolina, Charleston; and Center for Inherited Heart Disease, Johns Hopkins University, Baltimore, MD (D.P.J.). djudge@jhmi.edu.
2 From the Department of Medicine/Cardiology (D.P.J.) and the Department of Regenerative Medicine and Cell Biology (R.A.N.), Medical University of South Carolina, Charleston; and Center for Inherited Heart Disease, Johns Hopkins University, Baltimore, MD (D.P.J.).