1. Seirei Hospice, Seirei Mikatahara General Hospital, Hamamatsu, Japan.
2. Division of Palliative and Supportive Care, Seirei Mikatahara General Hospital, Hamamatsu, Japan.
3. Department of Palliative Care, Miyazaki Medical Association Hospital, Miyazaki, Japan.
4. Akari Home Care Clinic, Tokyo, Japan.
5. Department of Therapeutic Oncology and Graduate School of Medicine, Kyoto University, Kyoto, Japan.
6. Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.