1. Graduate School of Human Sciences, Osaka University, Osaka
2. Department of Palliative and Supportive Care, Palliative Care Team and Seirei Hospice, Seirei Mikatahara General Hospital, Shizuoka
3. School of Health Sciences, Kansai University of Welfare Sciences, Osaka
4. National Cancer Canter Hospital East, Kashiwa, Chiba