Using self-reported questionnaire and sampling to investigate 1 408 secondary school students in urban area in Beijing.

采取自我报告式问卷，以整群抽样的方法对北京市某城区1 408名初高中学生进行调查。

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A questionnaire was administered to gather the information of self-reported health and health related factors.

用问卷调查的方法获得自报健康及相关因素资料。

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They used a questionnaire from conventional ALS trials to gather patients' self-reported data on functions such as swallowing, walking, and breathing.

WSJ: ALS Study Falls Short, But Use of Social Media Holds Promise