因此凯文•豪尔和他所在国家糖尿病、消化和肾脏疾病研究所（马里兰州比色达）的同事们决定用新的方法来研究这个问题。
So Kevin Hall and his colleagues at the National Institute of Diabetes and Digestive and Kidney Diseases, in Bethesda, Maryland, decided to look at the problem in a new way.
资料来源：2010年，国家糖尿病、消化及肾脏疾病研究所。
Source: National Institute of Diabetes and Digestive and Kidney Diseases, 2010.
根据美国国立糖尿病、消化和肾脏疾病研究所，卫生研究所报告：当胆固醇变硬然后堵塞胆管，于是就会出现了胆结石。
They occur when cholesterol hardens and this then blocks bile ducts, according to the National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health.
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