1. Department of Pulmonary Medicine Fukushima Medical University Fukushima Japan
2. Diagnostic Imaging Center Ohara General Hospital Fukushima Japan
3. Division of Respiratory Medicine Gunma Prefectural Cancer Center Ota Japan
4. Department of Respiratory Medicine, International Medical Center Saitama Medical University Hidaka Japan
5. Division of Thoracic Oncology Tochigi Cancer Center Utsunomiya Japan
6. Division of Respiratory Medicine Ibaraki Prefectural Central Hospital Kasama Japan
7. Department of Thoracic Surgery, Aizu Medical Center Fukushima Medical University Aizuwakamatsu Japan
8. Department of Chest Surgery Fukushima Medical University School of Medicine Fukushima Japan
9. Clinical Oncology Center Fukushima Medical University Hospital Fukushima Japan
10. Department of Respiratory Medicine National Hospital Organization Hokkaido Cancer Center Sapporo Japan