1. Tokyo Metropolitan Institute of Gerontology; Tokyo Japan
2. Department of Applied Sociology; Kindai University; Osaka Japan
3. Department of Complementary and Alternative Medicine; Osaka University Graduate School of Medicine; Osaka Japan
4. Department of Palliative and Supportive Care, Palliative Care Team and Seirei Hospice; Seirei Mikatahara Hospital; Hamamatsu Japan
5. Department of Palliative Medicine; Osaka City General Hospital; Osaka Japan
6. Department of Nursing; Kyoto University Hospital; Kyoto Japan
7. Department of Clinical Thanatology and Geriatric Behavioral Science; Osaka University Graduate School of Human Sciences; Osaka Japan
8. Department of Clinical Research, Innovation, and Education Center; Tohoku University Hospital; Sendai Japan
9. Department of Palliative Medicine; Kyoto University Hospital; Kyoto Japan
10. Department of Palliative Medicine; Tsukuba Medical Center Hospital; Tsukuba Japan
11. Department of Palliative Nursing; Tohoku University Graduate School of Medicine; Sendai Japan