1. Department of Transitional and Palliative Care, Iizuka Hospital, Fukuoka, Japan.
2. Palliative and Supportive Care, Seirei Mikatahara General Hospital, Hamamatsu City, Shizuoka, Japan.
3. Clinical Research Support Office, Iizuka Hospital, Fukuoka, Japan.
4. Department of General Internal Medicine, Iizuka Hospital, Fukuoka, Japan.
5. Department of Nephrology, Iizuka Hospital, Fukuoka, Japan.
6. Department of Healthcare Epidemiology, Kyoto University Graduate School of Public Health, Kyoto, Japan.