1. Graduate School of Nursing, Osaka Metropolitan University Graduate School of Nursing, Osaka, Japan.
2. Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan.
3. Department of Hygiene and Public Health, Kansai Medical University, Hirakata, Japan.
4. Department of Palliative and Supportive Care, Palliative Care Team, Seirei Mikatahara General Hospital, Hamamatsu, Japan.
5. Department of Palliative and Supportive Care, Institute of Medicine, University of Tsukuba, Tsukuba, Japan.
6. Department of Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan.
7. Department of Palliative Medicine, Tsukuba Medical Center Hospital, Tsukuba, Japan.
8. Department of Palliative Nursing, Health Sciences, Tohoku University Graduate School of Medicine, Sendai, Japan.