If I were a researcher and wanted to study this issue, I'd look at people who work in churches. Many churches with tall steeples lease space in them to wireless network providers, and those who work in churches are working under these antennas all day in close proximity. Comparing cancer rates in this population to those in the general vicinity would be an interesting study.

I'd hypothesize that there isn't a big increase in cancer rates for pastors of Baptist churches. We've all had cell phones connected to our bodies for decades now with the main side effect apparently sore thumbs and disrupted sleep patterns. If there were a correlation, I'd expect we'd see it by now.