The latest study led by the Institute of Cancer Epidemiology in Denmark looked at more than 350,000 people with mobile phones over an 18-year period.

丹麦癌症流行病学研究所，最近开展了一项研究，对使用手机超过18年的35万人进行研究。

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The latest study led by the Institute of Cancer Epidemiology in Denmark looked at more than 350, 000 people with mobile phones over an 18-year period.

丹麦癌症流行病学研究所，最近开展了一项研究，对使用手机超过18年的35万人进行研究。

youdao

Most European countries now have too many 3G operators for all of them to be profitable: Denmark, for example, has four players and 3.8m mobile users, while Switzerland has four licence-holders for its 5.3m users.

ECONOMIST: More mobile trouble | The