1. Arbor Research Collaborative for Health, Ann Arbor, MI, USA
2. Departments of Epidemiology and Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
3. Department of Urology, Medical School, Ann Arbor, MI, USA
4. Department of Nephrology, University Hospital Ghent, Ghent, Belgium
5. Karolinska Institutet, Danderyd University Hospital, Division of Nephrology, Stockholm, Sweden
6. Department of Metabolism, Endocrinology and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
7. Keryx Biopharmaceuticals, Boston, MA, USA
8. Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
9. Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA