1. Geriatric Medicine Osaka University Graduate School of Medicine Suita Japan
2. Gastroenterological Surgery Osaka University Graduate School of Medicine Suita Japan
3. Cardiovascular Medicine and Hypertension Graduate School of Medical and Dental Sciences Kagoshima University Kagoshima Japan
4. Graduate School of Health Sciences Morinomiya University of Medical Sciences Osaka Japan
5. Clinical Epidemiology and Biostatistics Osaka University Graduate School of Medicine Suita Japan