Due to CKD by itself as a type of vascular lesions, a series study of no-traditional risk factors provide new targeting point for the prevention of cardiovascular disease in CKD.

CKD本身是一种血管病变状态，一系列新危险因素的研究为CKD心血管疾病的防治提供了新的干预靶点。

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Genotypic differences of potassium (k) efficiency among 86 cotton cultivars were investigated under water culture at seeding stage, 28 typical cultivars were picked out for a series study.

营养液培养条件下对86个棉花基因型苗期进行钾效率筛选，并对其中的28个进行了系统的研究。

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Song GX, Jiang LL, Chen GH, et al. A time-series study on the relationship between gaseous air pollutants and daily mortality in Shanghai [J]. Journal of Environment and Health, 2006,23(5):390-393.

（in Chinese） 宋桂香，江莉莉，陈国海，等。上海市大气气态污染物与居民每日死亡关系的时间序列研究[J]。 环境与健康杂志，2006，23（5）：390-393。

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The study was released in a series of articles published in the Lancet.

VOA: special.2009.09.08

The researchers are holding a series of study days around the country to spread the word about maggots.

BBC: Maggot cure for 'unbeatable' bug

The series is a result of a global study CEB and Ashoka completed in fall 2012.

FORBES: A Three-Step Method for Converting Passive Support into Real Action

Many groups and experts have asked that lawmakers take time to fully study the implications of the series of proposals, partly out of concern they could get caught up in the strong national desire to act swiftly and strongly in the aftermath of the attacks.

CNN: Anti-terrorism proposals worry civil libertarians