1. Department of Palliative Medicine National Cancer Center Hospital 5‐1‐1 Tsukiji, Chuo‐ku Tokyo 104‐0045 Japan
2. Department of Palliative and Supportive Medicine, Graduate School of Medicine Aichi Medical University 1‐1 Yazakokarimata Nagakute Aichi 480‐1195 Japan
3. Division of Palliative Care Medicine, Department of Oncology University of Alberta, Cross Cancer Institute Edmonton Alberta Canada
4. Palliative and Supportive Care Division Seirei Mikatahara General Hospital Hamamatsu Shizuoka Japan
5. Department of Palliative Medicine National Cancer Center Hospital East Kashiwa Chiba Japan
6. Department of Palliative Medicine Osaka City General Hospital Osaka Osaka Japan
7. Department of Palliative Medicine, Yokohama City University Hospital Department of Gastroenterology and Hepatology Yokohama City University Graduate School of Medicine Yokohama Kanagawa Japan
8. Department of Psychosomatic Internal Medicine and Supportive and Palliative Care Team National Hospital Organization Kinki‐Chuo Chest Medical Center Sakai Osaka Japan
9. Department of Palliative Medicine Tohoku University Graduate School of Medicine Sendai Miyagi Japan
10. Department of Palliative Care Team, and Palliative and Supportive Care St. Mary's Hospital Kurume Fukuoka Japan
11. Department of Clinical Oncology and Palliative Medicine Mitsubishi Kyoto Hospital Kyoto Kyoto Japan
12. Division of Community Medicine and International Medicine University of the Ryukyus Hospital Nakagami‐gun Okinawa Japan
13. Department of Palliative Nursing, Health Sciences Tohoku University Graduate School of Medicine Sendai Miyagi Japan
14. Graduate School of Public Health, St. Luke's International University OMURA Susumu & Mieko Memorial St. Luke's Center for Clinical Academia Tokyo Japan
15. College of Nursing Art and Science University of Hyogo Akashi Hyogo Japan
16. Department of Psycho‐oncology National Cancer Center Hospital Tokyo Japan