The estimate is the first to cover the entire United States instead of select populations according to location or age, said the study authors from Johns Hopkins University.

这次的估算还是第一次涵盖了全美而不是根据地区和年龄选择部分人口做调查，来自约翰霍普金斯大学的研究报告作者这样说道。

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That Used to Be Us, written with Michael Mandelbaum, Director of the Foreign Policy program at Johns Hopkins University, the authors assert that the United States no longer leads the world in its ability to innovate and to efficiently create new things and ideas.

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In a study presented last fall at the annual heart association meeting, a team of heart experts from Johns Hopkins University reported evidence that at least 522 lives can be saved annually in the United States and Canada by the widespread placement of automated external defibrillators.

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