1. Department of Acute Medicine; Faculty of Medicine; Kinki University; Boston Massachusetts
2. Department of Emergency Medicine; Harvard Medical School; Massachusetts General Hospital; Boston Massachusetts
3. Department of Social and Environmental Medicine; Division of Environmental Medicine and Population Sciences; Graduate School of Medicine; Osaka University; Osaka Japan
4. Department of Critical Care Nursing; School of Human Health Science; Graduate School of Medicine; Kyoto University Health Service; Kyoto Japan
5. Kyoto University Health Service; Kyoto Japan