This article has been adapted by Jokin de Irala and Carolyn Moynihan from a letter published in the British Medical Journal online.

此文章由约金。德。艾拉拉和卡罗林。莫尼汗从《英国医学杂志》网络版的一封信中摘录。

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Harvard and the University of California at San Diego, who report in the British Medical Journal online that happiness spreads among people like a salubrious disease.

这是哈佛大学和圣地亚哥的加州大学研究员的研究结果。

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The study, which looked at nearly 5, 000 individuals over 20 years, was published online Thursday in the British Medical Journal.

这项研究对5000个个体进行了将近20年的观察，并把观察结果发表在了一个英国在线的医学杂志上面。

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Writing online in the British Medical Journal, it said actively rejecting help was a child protection issue.

BBC: Parental failure over child obesity is 'neglect'

Health concerns outweigh any economic benefits of raising the speed limit on motorways, according to an online report in the British Medical Journal.

FORBES: Insane Medical Prediction of the Day: A Raised Speed Limit Causes Obesity