1. Clinical Epidemiology Center, Department of Veterans Affairs, St Louis Health Care Systems, St Louis, Missouri
2. Veterans Research and Education Foundation of St Louis, St Louis, Missouri
3. Department of Epidemiology and Biostatistics, College for Public Health and Social Justice, St Louis University, St Louis, Missouri
4. Section of Vascular Surgery, Department of Surgery, School of Medicine, Washington University in St Louis, St Louis, Missouri
5. Department of Surgery, Veterans Affairs St Louis Health Care System, St Louis, Missouri
6. Division of Nephrology, School of Medicine, Washington University in St Louis, St Louis, Missouri
7. Department of Medicine, School of Medicine, Washington University in St Louis, St Louis, Missouri
8. Nephrology Section, Medicine Service, Department of Veteran Affairs St Louis Health Care System, St Louis, Missouri
9. Institute for Public Health, Washington University in St Louis, St Louis, Missouri