1. Division of Vascular Surgery and Endovascular Therapy Johns Hopkins University School of Medicine Baltimore MD
2. Department of Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore MD
3. Division of Cardiology Johns Hopkins University School of Medicine Baltimore MD
4. Division of Epidemiology & Community Health University of Minnesota Minneapolis MN
5. Department of Epidemiology Gillings School of Global Public Health University of North Carolina Chapel Hill NC