1. Postgraduate Clinical Training Center; Shimane University Hospital; Shimane Japan
2. Faculty of Medicine; Department of Community-based Health Policy and Quality Management; Shimane University; Izumo-shi Japan
3. Center for Primary Health Care Research; Lund University; Lund Sweden
4. Division of Community Medicine and Medical Education; Graduate School of Medicine; Kobe University; Kobe Japan
5. Department of Internal Medicine; Division of Neurology; Hyogo College of Medicine; Hyogo Japan
6. Shimane University Hospital; Shimane Japan