That's according to a study in the Journal of School Nursing.

这项研究结果刊登在《学校护理杂志》上。

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Last year his wife returned to school to study nursing as a back-up to his salary.

VOA: standard.2010.07.29

But by the time she left school nursing in 2005, "there were children in the majority of classrooms" with the disorder, said Schoessler, who now works at the National Association of School Nurses in Silver Spring, Md.

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The fear of stepping out took me along the safe, no-risk route through high school, nursing school and into a secure hospital job.

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Philadelphia, thanks to Ben Franklin, was the home of America's first hospital, later America's first medical school and first nursing school.

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