1. Department of Public Health, Tokyo Women's Medical University, Tokyo, Japan
2. Department of Critical Care Nursing, Kyoto University Graduate School of Human Health Science, Kyoto, Japan
3. Kyoto University Health Service, Kyoto, Japan
4. Department of Acute Medicine, Kindai University Faculty of Medicine, Osaka, Japan
5. Senri Critical Care Medical Center, Osaka Saiseikai Senri Hospital, Osaka, Japan
6. Division of Environmental Medicine and Population Sciences, Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan