1. Division of Palliative Care, Department of Anesthesiology, School of Medicine, Wakayama Medical University
2. Department of Psychosomatic Internal Medicine, Kinki-Chuo Chest Medical Center
3. Department of Palliative Medicine, Kobe University Graduate School of Medicine
4. Division of Palliative and Supportive Care, Seirei Mikatahara General Hospital
5. Clinical Study Support Center, Wakayama Medical University