1. Department of Medicine, London Health Sciences Centre, London, Ontario, Canada
2. Southern Iron Disorders Center, Birmingham, Alabama, USA
3. VA Long Beach Healthcare System, Long Beach, and Univeristy of California, Irvine, California, USA
4. Department of Microbiology, University of Alabama, Birmingham, Alabama, USA
5. University of Western Ontario, London, Ontario, Canada
6. Department of Epidemiology, University of California, Irvine, California, USA
7. Division of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
8. Departments of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
9. Translational Genomics Research Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
10. Kaiser Permanente Center for Health Research, Honolulu, Hawaii, USA
11. Department of Epidemiology and Biostatistics, Epidemiology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
12. National Human Genome Research Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
13. Department of Medicine, Howard University, Washington DC, USA