1. Department of Internal Medicine, Mito Kyodo General Hospital University of Tsukuba Ibaraki Japan
2. Division of Medical Education Juntendo University School of Medicine Tokyo Japan
3. Department of Information and Computer Technology, Faculty of Engineering Tokyo University of Science Tokyo Japan
4. Department of Diagnostic and Generalist Medicine Dokkyo Medical University Hospital Tochigi Japan
5. Division of General Medicine, Center for Community Medicine Jichi Medical University Tochigi Japan
6. Department of General Medicine Chiba University Hospital Chiba Japan
7. Department of Emergency and General Medicine Kyorin University Chiba Japan
8. Department of General Internal Medicine Shonan Kamakura General Hospital Kamakura Japan
9. Division of General Internal Medicine, Department of Internal Medicine St. Marianna University School of Medicine Kawasaki Japan
10. Department of Patient Safety Nagoya University Hospital Nagoya Japan
11. Muribushi Okinawa for Teaching Hospitals Okinawa Japan
12. Tokyo Foundation for Policy Research Tokyo Japan