1. Division of Respiratory Medicine, Gunma Prefectural Cancer Center Ota Japan
2. Department of Respiratory Medicine, Comprehensive Cancer Center, International Medical Center Saitama Medical University Hidaka Japan
3. Division of Respiratory Medicine, Saku Central Hospital Advanced Care Center Saku Japan
4. Division of Respiratory Medicine, Toyama Prefectural Central Hospital Toyama Japan
5. Department of Pulmonary Medicine Fukushima Medical University Fukushima Japan
6. Department of Respiratory Medicine Jichi Medical University, Saitama Medical Center Saitama Japan
7. Division of Respiratory Medicine, Ibaraki Prefectural Central Hospital Kasama Japan
8. Division of Thoracic Oncology, Tochigi Cancer Center Utsunomiya Japan
9. Third Department of Internal Medicine, Faculty of Medical Sciences University of Fukui Eiheiji Japan