1 Departments of Internal Medicine, Cardiology, Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, United States.
2 Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, United States.
3 Departments of Internal Medicine, Cardiology, Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, United States; Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, United States; Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA, United States; Medical Service of the McGuire Veterans Affairs Medical Center, Richmond, VA, United States. Electronic address: edward.lesnefsky@va.gov.