Kajino K, Kitamura T, Kiyohara K, Iwami T, Daya M, Hock Ong ME, Shimazu T, Sadamitsu D. Temporal Trends in Outcomes after Out-of-Hospital Cardiac Arrests Witnessed by Emergency Medical Services in Japan: A Population-Based Study. Prehospital Emergency Care. 2016. 20(4): 477-484