Cellular-Telephone Use and Brain Tumors
Hand-held cellular telephones were introduced to the U.S. market in 1984 1 but were not widely used until the mid-1990s. By early 2000, the number of subscribers to cellular-telephone services had grown to an estimated 92 million in the United States and 500 million worldwide. 2 , 3 Some concern has...
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Veröffentlicht in: | The New England journal of medicine 2001-01, Vol.344 (2), p.79-86 |
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Sprache: | eng |
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