February 1... The Swedish Radiation Protection Authority (SSI) has reiterated its advice that people should adopt a precautionary approach to the use of mobile phones. In a statement issued yesterday, the SSI warned that the latest results from the Interphone study (see January 22 and January 26, below) « strengthen » the possibility that cell phones can lead to tumor development -both gliomas and acoustic neuromas. The SSI recommends the use of hands-free sets and that calls be made from locations where there is good coverage (so that the phone does not have to pump up the radiation to reach the nearest tower). The SSI also announced that it would issue advice on how to reduce RF radiation exposures from mobile phones in the spring.