1. Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine, Orange, CA, USA
2. Fielding School of Public Health at UCLA, Los Angeles, CA, USA
3. Los Angeles Biomedical Research Institute at Harbor-UCLA, Torrance, CA, USA
4. Kaiser Permanente of Southern California, Los Angeles, CA, USA
5. Biostatistics, Epidemiology & Research Design Unit, Institute for Clinical and Translational Science, University of California Irvine, Irvine, CA, USA
6. Deptartment of Statistics, Program in Public Health, University of California Irvine, Irvine, CA, USA
7. Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
8. Kidney Epidemiology and Cost Center, University of Michigan, Ann Arbor, MI, USA
9. Arbor Research Collaborative for Health, Ann Arbor, MI, USA
10. Division of Nephrology, University of Tennessee Health Science Center, Memphis, TN, USA
11. Nephrology Section, Memphis VA Medical Center, Memphis, TN, USA