Fumiko Inoue1, Ryota Sato2, Tadaaki Takada1. 1. Department of Emergency and Critical Care Medicine, Urasoe General Hospital, 4-16-1, Iso, Urasoe, Okinawa, Japan. 2. Department of Emergency and Critical Care Medicine, Urasoe General Hospital, 4-16-1, Iso, Urasoe, Okinawa, Japan. Electronic address: st051035@gmail.com.