1. Clinical Epidemiology Center, Research and Development Service, Veterans Affairs Saint Louis Health Care System, Saint Louis, Missouri, USA
2. Department of Epidemiology and Biostatistics, College for Public Health and Social Justice, Saint Louis University, Saint Louis, Missouri, USA
3. Veterans Research and Education Foundation of Saint Louis, Saint Louis, Missouri, USA
4. Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, Saint Louis, Missouri, USA
5. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada
6. Department of Energy, Environmental & Chemical Engineering, Washington University in Saint Louis, Saint Louis, Missouri, USA
7. Department of Medicine, Washington University School of Medicine, Saint Louis, Missouri, USA
8. Nephrology Section, Medicine Service, Veterans Affairs Saint Louis Health Care System, Saint Louis, Missouri, USA
9. Institute for Public Health, Washington University in Saint Louis, Saint Louis, Missouri, USA