This study used quantitative and qualitative research techniques to collect data from health-care providers and users to evaluate the experience of operating an RDF in Khartoum state.

本研究采用定量和定性研究方法，自医疗服务机构和使用者收集资料，对在喀土穆操作药品周转基金的经验进行评估。

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This study used the experimental method.

本研究采用实验法。

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This study used questionnaire method and experimental method to carry on the research.

本研究主要运用问卷调查法和实验法进行研究。

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Doctor Ruhli says researchers used this method to study changes in the tuberculosis bacteria from two thousand year-old mummified tissue.

VOA: special.2010.06.29

So tens or hundreds of millions of dollars would go into a study like this by the time it was completed, money that could have been used for other things, to test whether eating a low fat diet would reduce risk for breast cancer.

数以百万计的美元,投入到这样的研究,当研究结束时,本可以用来做其他事情的钱,被用来检测是否低脂膳食,可降低患乳腺癌风险

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This study should not be used to draw any conclusions about the cause of cancer patterns in workers.

BBC: Breast cancer

Another facet of this study was that the researchers used a survey to tease out other factors that might be influencing semen quality.

ECONOMIST: Sex: Twin peaks | The

Profiles used in this study had anywhere from one to 500 likes on the social network, though the average number of things people liked was 170.

CNN: Heather Kelly,