The latest Interphone findings pointing to a link between brain tumors and long-term use of a mobile phone (see January 22) should not be dismissed, according to members of the European research team that published the new results. "This is something you have to take seriously," Maria Feychting of the Karolinska Institute in Stockholm told the Expressen, a Swedish national tabloid. Feychting advises those who are concerned to use a hands-free set to reduce radiation exposures.