1. Virology and Gene Therapy Graduate Program, Mayo Clinic, Rochester, MN 55905.
2. Nephrology Training Program, Mayo Clinic, Rochester, MN 55905.
3. Departments of Laboratory Medicine and Pathology, Medical Genetics, and Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN 55905.
4. Division of Infectious Diseases, Department of Internal Medicine, and Departments of Immunology and Molecular Medicine, Mayo Clinic, Rochester, MN 55905.