1. Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine
2. Department of Respiratory Medicine, Maebashi Red Cross Hospital
3. Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University School of Medicine
4. Gunma University School of Health Sciences
5. Division of Respiratory Medicine and Allergology, Department of Medicine, Teikyo University School of Medicine
6. Department of Respiratory Diseases, National Hospital Organization Tokyo National Hospital
7. Department of Diagnostic Pathology, Gunma University Graduate School of Medicine
8. Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute