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原材料引用（Materials） 原文It said people should increase the number of chest pr...
原材料引用（Materials） 原文The researchers say any of kind of CPR improved chanc...
原材料引用（Materials） 原文712 received CPR. 439 received chest presses only. No...
原材料引用（Materials） 原文In all the cases, witnesses saw the event happen.More...
原材料引用（Materials） 原文Doctors in Tokyo led the research. It examined more t...
原材料引用（Materials） 原文This is the VOA special English Health Report.Cardio-...
原材料引用（Materials） 原文The study was published in the British medical magazi...
原材料引用（Materials） 原文However, a new Japanese study questions the usefulnes...
原材料引用（Materials） 原文CPR keeps blood and oxygen flowing to the heart and b...