1. Department of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
2. Tamatani Clinic, Osaka, Osaka, Japan
3. Toyonaka Watanabe Clinic, Toyonaka, Japan
4. Higashi Takarazuka Satoh Hospital, Takarazuka, Japan
5. Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Suita, Japan
6. Department of Medical Statistics, Osaka City University Graduate School of Medicine and Faculty of Medicine, Osaka, Japan