1. Kyoto University Health Service, Japan
2. Fukushima University Healthcare Center, Japan
3. Department of Health Sciences, Gumma Paz College Graduate School of Health Sciences, Japan
4. Safety and Health Organization, Chiba University, Japan
5. Nara Women's University Health Care Center, Japan
6. The University of Tokyo Health Service Center, Japan
7. Health Care Center, Hokkaido University, Japan
8. Division of Clinical Epidemiology, Department of Clinical Research and Informatics, National Center for Global Health and Medicine, Japan