3Charles N. Pozner, Richard Zane. et al. Michael Levine b International EMS Systems: The United States: past, present, and future[J]. Resuscitation ,2004,60:239-244.
4Matthew R. Lewin, Shingo Hori,et al. Emergency medical services in Japan: an opportunity for the rational development of pre-hospital care and research[J]. The Journal of Emergency Medicine, 2005,28(2):237 -241.