1 Department of Emergency and Critical Care Medicine, Dokkyo Medical University Saitama Medical Center, Koshigaya, Japan.
2 Department of Emergency and Critical Care Medicine, Emergency and Critical Care Center, Saiseikai Kazo Hospital, Social Welfare Organization Saiseikai Imperial Gift Foundation Inc, Kazo, Japan.
3 SimTiki Simulation Center, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA.