1. Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan
2. EBM and Guidelines Division, Japan Council for Quality Health Care, Tokyo, Japan
3. Department of Social Medicine, School of Public Health, The University of Tokyo, Tokyo, Japan
4. Division of Public Health, Department of Hygiene and Public Health, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
5. Center of Emergency and Critical Care, Kurashiki Central Hospital, Okayama, Japan