1. Department of Emergency and Critical Care Medicine, Tama Nagayama Hospital, Nippon Medical School
2. Department of Infection Control and Emergency and Critical Care Medicine, Musashi Kosugi Hospital, Nippon Medical School
3. Resident physician, Tama Nagayama Hospital, Nippon Medical School
4. Resident physician, Musashi Kosugi Hospital, Nippon Medical School
5. Department of Emergency and Critical Care Medicine, Nippon Medical School