1. Howard Hughes Medical Institute (H.H.H.), University of Texas Southwestern Medical Center, Dallas.
2. Departments of Internal Medicine (H.H.H., J.C.C., J.D.H.), University of Texas Southwestern Medical Center, Dallas.
3. Molecular Genetics (H.H.H., J.D.H.), University of Texas Southwestern Medical Center, Dallas.
4. Center for Human Nutrition (J.C.C., J.D.H.), University of Texas Southwestern Medical Center, Dallas.