[1] Jichi Medical University Saitama Medical Center,Department of Emergency and Critical Care Medicine
[2] Keio University Hospital Clinical and Translational Research Center (CTR),Department of Clinical Research Education and Training Unit
[3] National Hospital Organization Yokohama Medical Center,Department of Critical and Emergency Medicine
[4] Kanazawa University,Department of Cardiovascular Medicine, Graduate School of Medical Science
[5] Yamagata University Hospital,Department of Emergency and Critical Care Medicine
[6] Hiroshima University Hospital,Department of Emergency and Critical Care Medicine, Postgraduate School of Medical Science