1. Division of Emergency and Disaster Medicine, Tohoku Medical and Pharmaceutical University Hospital, 1-15-1, Fukumuro, Miyaginoku, Sendai City 983-8512, Miyagi, Japan
2. Division of Hematology and Rheumatology, Tohoku Medical and Pharmaceutical University Hospital, 1-15-1, Fukumuro, Miyaginoku, Sendai City 983-8512, Miyagi, Japan