1. Department of Pharmacy, Kobe University Hospital, Kobe, Japan
2. Biostatistics Center, School of Medicine, Kurume University, Kurume, Japan
3. Palliative Care Team, Kobe University Hospital, Kobe, Japan
4. Department of Palliative Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
5. Nagoya City University Hospital, Palliative Care and Psycho-Oncology, Nagoya, Japan
6. Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan