1. Departments of Emergency and Acute Medicine Saitama Medical University International Medical Center Saitama Japan
2. Department of Psycho‐oncology Saitama Medical University International Medical Center Saitama Japan
3. Department of General Medicine Ogano Town Central Hospital Saitama Japan
4. Department of Pharmacy Maruki Memorial Medical and Social Welfare Center Saitama Japan
5. Department of Medical Oncology and Palliative Care Mitsubishi Kyoto Hospital Kyoto Japan
6. Department of Clinical Epidemiology, Graduate School of Biomedical Sciences Nagasaki University Nagasaki Japan