1. Division of Respiratory Medicine, Saku Central Hospital Advanced Care Center, Japan
2. Department of Respiratory Medicine, Comprehensive Cancer Center, International Medical Center, Saitama Medical University, Japan
3. Division of Respiratory Medicine, Gunma Prefectural Cancer Center, Japan
4. Division of Respiratory Medicine, Toyama Prefectural Central Hospital, Japan
5. Department of Respiratory Medicine, Jichi Medical University, Saitama Medical Center, Japan
6. Division of Thoracic Oncology, Tochigi Cancer Center, Japan
7. Division of Internal Medicine, Kiryu Kosei General Hospital, Japan
8. Third Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Japan
9. Division of Respiratory Medicine, Ibaraki Prefectural Central Hospital, Japan
10. Division of Respiratory Medicine, National Hospital Organization Takasaki General Medical Center, Japan