1. London (Ontario) Health Sciences Center, London, Ontario.
2. Southern Iron Disorders Center, Birmingham, Alabama and Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
3. Departments of Microbiology, Medicine, Genetics, Epidemiology and International Health, University of Alabama at Birmingham, Birmingham, Alabama.
4. Uniformed Services University of the Health Sciences, Bethesda, Maryland.
5. Wake Forest University, Winston-Salem, North Carolina.
6. University of California, Irvine, Irvine, California.
7. Howard University, Washington, D.C.