1. Palliative Care Team, Department of General Medicine and Primary Care, University of Tsukuba Hospital, Tsukuba, Japan
2. Department of Palliative Medicine, Tsukuba Medical Center Hospital, Tsukuba, Japan
3. Department of Palliative Medicine, Yuai Memorial Hospital, Koga, Japan
4. Department of Palliative Care, Komaki City Hospital, Komaki, Japan
5. Department of Palliative Care, Japanese Red Cross Medical Center, Tokyo, Japan
6. Hospice Palliative Medicine, Yodogawa Christian Hospital, Osaka, Japan
7. Department of Palliative Care, Senri-Chuo Hospital, Toyonaka, Japan
8. Department of Palliative Medicine, National Cancer Center Hospital East, Kashiwa, Japan
9. Palliative Care Team, Seirei Mikatahara General Hospital, Hamamatsu, Japan
10. Division of Palliative and Supportive Care, Seirei Mikatahara General Hospital, Hamamatsu, Japan
11. Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
12. Faculty of Medicine, University of Tsukuba, Tsukuba, Japan