1. Division of Palliative Care, Department of Medicine, Konan Hospital, Kobe, Japan
2. Department of Palliative Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
3. Department of Psychosomatic Internal Medicine, Kinki-Chuo Chest Medical Center, Sakai, Japan
4. Department of Psychosomatic Medicine, Faculty of Medicine, Kindai University, Osaka-Sayama, Japan
5. Department of Palliative Medicine, Tsukuba Medical Center Hospital, Tsukuba, Japan
6. Department of Palliative Medicine, Shizuoka Cancer Center, Nagaizumi, Japan
7. Department of Palliative Care, Komaki City Hospital, Komaki, Japan
8. Gratia Hospice, Gratia Research and Clinical Education (GRACE) Center, Gratia Hospital, Minoh, Japan
9. Seirei Hospice, Seirei Mikatahara General Hospital, Hamamatsu, Japan
10. Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
11. Department of Clinical Trial and Clinical Epidemiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan