1. Department of Palliative Medicine, Tsukuba Medical Center Hospital, Tsukuba, Japan.
2. Department of Palliative Medicine, Shinjo Clinic, Kobe, Japan.
3. Seirei Hospice, Seirei Mikatahara General Hospital, Hamamatsu, Japan.
4. Cancer Care Promotion Center, University of Fukui, Fukui, Japan.
5. Palliative Care Unit, JCHO Tokyo Shinjuku Medical Center, Tokyo, Japan.
6. Department of Palliative Care, Niigata Cancer Center Hospital, Niigata, Japan.
7. Department of Internal Medicine, Senshunkai Hospital, Kyoto, Japan.
8. Department of Palliative Care, HITO Medical Center, Ehime, Japan.
9. Hospice, Medical Corporation Junkei-kai Sotosahikawa Hospital, Akita, Japan.
10. Department of Palliative Care, Hiroshima Prefectural Hospital, Hiroshima, Japan.
11. Department of Palliative Care, Konan Hospital, Kobe, Japan.
12. Department of Community-based Medicine and Primary Care, University of the Ryukyus, Okinawa, Japan.