1. Department of Neurology; Fukushima Medical University; Fukushima Japan
2. Department of General Internal Medicine; Japanese Red Cross Nagoya Daini Hospital; Nagoya-shi Japan
3. Department of Healthcare Epidemiology; School of Public Health in the Graduate School of Medicine, Kyoto University; Kyoto-shi Japan
4. Central Operation Room; Nara Medical University; Kasahara-shi Japan
5. Hospital Care Research Unit; Hyogo Prefectural Amagasaki General Medical Center; Hyogo Japan