1. Department of Psychosomatic Internal Medicine, National Hospital Organization Kinki-Chuo Chest Medical Center, Sakai, Japan.
2. Clinical Research Center National Hospital Organization Kinki-Chuo Chest Medical Center, Sakai, Japan.
3. Palliative and Supportive Care Division, Seirei Mikatahara General Hospital, Hamamatsu, Japan.
4. Department of Respiratory Medicine, Hyogo Prefectural Amagasaki General Medical Center, Aamagasaki, Japan.
5. Department of Respiratory Medicine, Itami City Hospital, Itami, Japan.
6. Department of Respiratory Medicine, Sakai City Medical Center, Sakai, Japan.
7. Department of Respiratory Medicine, HARUHI Respiratory Medical Hospital, Kiyosu, Japan.
8. Department of Respiratory Medicine, Osaka Habikino Medical Center, Habikino, Japan.
9. Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
10. Department of Data Management, JORTC Data Center, Tokyo, Japan.
11. Department of Biostatistics, JORTC Data Center, Tokyo, Japan.
12. Department of Palliative Medicine, Saitama Medical University, Moroyama, Japan.
13. Division of Biostatistics, Tohoku University Graduate School of Medicine, Sendai, Japan.
14. Department of Palliative Care, National Center for Geriatrics and Gerontology, Obu, Japan.