研究员回顾了1970至2009年期间的9项研究，发现手术后体重和体质指数增加长达七年时间。

The researchers, who reviewed nine studies published between 1970 and 2009, found increased weight and body mass index (BMI) could be seen for up to seven years after the operation.

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在小公司应用六西格玛，可以减少失误及浪费，揭露隐性成本，使过程合理化，提高产品的总体质量和服务，增加客户满意度。

Six Sigma for Small Business can reduce mistakes and waste, uncover hidden costs, streamline processes, improve overall quality of products and services, and increase customer satisfaction.

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然而一些人口研究的结果显示，那些身体质量指数超过25，不到30的女性也存在不断增加的避孕风险。

But several demographic studies have shown that even women just considered "overweight," with a body mass index of 25-30, may also be at increased risk of contraceptive failure.

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