1. Thoracic Diseases Research Unit, Departments of Medicine and Biochemistry, Mayo Clinic College of Medicine, Rochester, Minnesota
2. Department of Pediatrics
3. Department of Internal Medicine, and
4. Department of Medical Microbiology and Immunology, University of Wisconsin Medical School, University of Wisconsin Hospital and Clinics, Madison, Wisconsin; and
5. Division of Molecular Immunology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan