Because some studies included data on people who used cell phones infrequently, or who had not used them for many years, Hardell suspected that their cancer risk findings were too low.

因为有些研究包括了那些不频繁使用手机的人的数据，或者那些使用手机年限不够长的人的数据，哈德尔猜测他们罹患癌症的风险太低。

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Hardell, whose study was published recently in the European Journal of Cancer Prevention, studied 1,617 patients with brain tumors and compared them with a similar-size group of people without tumors.

哈德尔共研究了1617名脑癌患者，并将他们的与人数差不多的非脑癌患者进行了比较。他的研究刊登在最近的《欧洲癌症预防》杂志上。

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Eight of the strongest studies came from the same researcher: oncologist Dr. Lennart Hardell in Sweden.

CNN: Study fails to end debate on cancer, cell phone link

Of the studies ultimately used, the majority were by Swedish scientist Lennart Hardell, who has a long history of environmental activism.

FORBES

One well-informed scientist told me that she thought the committee member who resigned did so in disgust at the weight given to the Hardell studies.

FORBES: Behind The World Health Organization's "Cancerous" Pronouncement On Cell Phones