1 Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo, Chiba 260-8677, Japan. Electronic address: d.s.gpcmail.0621@gmail.com.
2 Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo, Chiba 260-8677, Japan. Electronic address: taka.nakada@nifty.com.
3 Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo, Chiba 260-8677, Japan. Electronic address: taroh_2215@hotmail.com.
4 Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo, Chiba 260-8677, Japan. Electronic address: nozomi_t1991@hotmail.com.
5 Department of Medical Engineering, Graduate School of Science and Engineering, Chiba University, 1-33, Yayoicho, Inage, Chiba 263-8522, Japan. Electronic address: shinozaki.masayoshi@chiba-u.jp.
6 Department of Medical Engineering, Graduate School of Science and Engineering, Chiba University, 1-33, Yayoicho, Inage, Chiba 263-8522, Japan. Electronic address: rika_shimizu@chiba-u.jp.
7 Center for Frontier Medical Engineering, Chiba University, 1-33, Yayoicho, Inage, Chiba 263-8522, Japan. Electronic address: nakaguchi@faculty.chiba-u.jp.