1. Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan;
2. Palliative and Supportive Care Division, Seirei Mikatahara General Hospital, Hamamatsu, Japan;
3. Seirei Hospice, Seirei Mikatahara General Hospital, Hamamatsu City, Japan;
4. Hospice Children's Hospice Hospital, Yodogawa Christian Hospital, Osaka, Japan;
5. Department of Palliative Medicine, National Cancer Center Hospital East, Kashiwa, Japan;
6. Department of Pain and Palliative Care, Kameda Medical Center, Kamogawa, Japan;
7. Department of Palliative Medicine, Kobe University Graduate School of Medicine, Kobe, Japan;
8. Department of Palliative Care, Mitui Memorial Hospital, Tokyo, Japan;
9. Department of Palliative Medicine, Tohoku University Hospital, Sendai, Japan;
10. Department of Palliative Medicine, Osaka City General Hospital, Osaka, Japan;
11. Komaki City Hospital, Komaki, Japan;
12. Department of Palliative Care Team, and Palliative and Supportive Care, National Kyushu Cancer Center, Fukuoka, Japan;
13. Department of Palliative Care, KKR Sapporo Medical Center, Sapporo, Japan;
14. Department of Psychosomatic Medicine, National Hospital Organization Kinki-Chuo Chest Medical Center, Osaka, Japan;
15. Center for Palliative and Supportive Care, Tsukuba University Hospital, Ibaraki, Japan;
16. Seirei Hamamatsu General Hospital, Hamamatsu, Japan;
17. Department of Primary Care Service, Shinsei Hospital, Nagano, Japan;
18. Saiseikai Matsusaka General Hospital, Matsusaka, Japan;
19. Yuuaikai Nanbu Hospital, Itoman, Japan;
20. Department of Palliative Medicine, National Cancer Center Hospital East, Chiba, Japan