原材料引用（Materials): The American Heart Association says about ninety-five ...

原材料引用（Materials): Doctor Ewy thinks the CPR guidelines should be changed...

原材料引用（Materials): He says this would save lives. hi sɛz ðɪs wʊd seɪv lɪv...

原材料引用（Materials): It said people should increase the number of chest pre...

原材料引用（Materials): Twenty-two percent survived with good brain ability. ˈ...

原材料引用（Materials): The researchers say any kind of CPR improved chances o...

原材料引用（Materials): 712 received CPR，439 received chest presses only. No m...

原材料引用（Materials): In all the cases, witnesses saw the event happen.More ...

原材料引用（Materials): DoctorsinTokyoled the research. It examined more than ...