1. Department of Emergency Medicine National Hospital Organization Mito Medical Center Ibaraki Japan
2. Department of Clinical Epidemiology and Health Economics School of public Health Graduate School of Medicine The University of Tokyo Tokyo Japan
3. Department of Nephrology and Dialysis Kyoritsu Hospital Hyogo Japan
4. Center for Innovative Research for Communities and Clinical Excellence (CiRC2LE) Fukushima Medical University Fukushima Japan