1. Department of Respiratory Medicine, Gunma University Graduate School of Medicine, 3-39-15 Sho-wa machi, Maebashi, Gunma 371-8511, Japan
2. Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki-machi, Takasaki, Gunma 370-1292, Japan
3. Department of Respiratory Medicine, International Medical Center, Saitama Medical University, 1397-1 Yamane Hidaka-shi, Saitama 350-1298, Japan
4. Biological Function Analysis, Gunma University Graduate School of Medicine, 3-39-15 Sho-wa machi, Maebashi, Gunma 371-8511, Japan
5. Department of General Surgical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
6. Gunma University Graduate School of Health Sciences, 3-39-22 Sho-wa machi, Maebashi, Gunma 371-8514, Japan
7. Department of Human Pathology, Gunma University Graduate School of Medicine, 3-39-15 Maebashi, Gunma 371-8511, Japan
8. Jobu Hospital for Respiratory Diseases, 586-1 Taguchi-machi, Maebashi, Gunma Japan, 371-0048