1. Department of Medicine, Case Western Reserve University School of Medicine and University Hospitals of Cleveland, and the Departments of Medicine and Pathology, the School of Medicine, University of North Carolina, Durham, N.C.
2. School of Medicine, Case Western Reserve University, Cleveland, Ohio; supported in part by the Pink Family Poundation.
3. American Heart Association and Professor of Medicine, Case Western Reserve University, Cleveland, Ohio.
4. Departments of Medicine and Pathology, School of Medicine, University of North Carolina, Durham, NC.
5. School of Medicine, University of North Carolina, Durham, NC.