There's an old English saying that goes "He who pays the piper calls the tune."
This also applies to cell-phone health studies according to a new analysis by a team from Switzerland's University of Basel. In a paper accepted for publication in Environmental Health Perspectives (EHP), Matthias Egger and Martin Röösli and coworkers found that: "Studies exclusively funded by industry reported the largest number of outcomes but were least likely to report a statistically significant result...compared to studies funded by public agencies or charities."
Their analysis is based on 59 experimental studies published between 1995 and 2005. They note that a majority (68%) of these studies reported biological effects. Egger and Röösli advise that "the interpretation of the results from existing and future studies of the health effects of [RF] radiation should take sponsorship into account."