Ryo Yonai1, Ryota Sato2, Michitaka Nasu1. 1. Department of Emergency and Critical Care Medicine, Urasoe General Hospital, Urasoe City, Okinawa, Japan. 2. Department of Emergency and Critical Care Medicine, Urasoe General Hospital, Urasoe City, Okinawa, Japan. Electronic address: st051035@gmail.com.