One way of investigating this is-- to get around the selection bias-- is to try to look at all countries.

为了避免选择性偏差,研究方法之一是,研究所有的国家

耶鲁公开课 - 金融市场课程节选

It was launched in 1948 by The National Heart Institute, that later is now called The National Heart, Lung & Blood Institute, the NHLBI.

这项研究是1948年,由国家心脏病学会提出的,该学会之后更名为,国家心肺血液研究所,简称NHLBI

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选