1. Department of General Medicine, Shirakawa Satellite for Teaching And Research (STAR), Fukushima Medical University, Fukushima, Japan
2. Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto, Japan
3. Department of Health Informatics, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto, Japan
4. Department of Family Medicine, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan
5. Department of Family Medicine, Taipei City Hospital, Taipei, Taiwan
6. The Kansai Centre for Family Medicine, Kanai Hospital, Kyoto, Japan
7. Department of Home Care Medicine, Kameda Medical Center, Chiba, Japan
8. Department of General Medicine, Medical Center Narita Hospital, Chiba, Japan