Just a couple of points to ponder then....
1) What makes you worry about mobile phone transmitters working at tens of watts at the most, but not, for example, TV transmitters working at several kW, except for through watching Judge John Deed. Or indeed overhead cables, come to that. I'd be more worried about having an electricity meter near a child's bedroom if you want something else to worry about.
2) What makes you worry about mobile phone masts, rather than mobile phones, given that the incident radiation on your head is far greater than from one of those than it is from a mast
3) Actually, if you were worried about radiation, it is best to be as close to a mast as possible. Given that the radiation from a phone is much greater than you will experience from a mast, and the fact that your phone will have an automatic transmit level control, so that it transmits less power (and saves battery) the nearer it is to a mast thus saving your head.
4) Given that mobile phones are so widely used, with almost universal usage, and have also been about for a sufficient ammount of time, there would have been a massive increase in head cancer by now. And there hasn't been.
5) And really don't worry about the backhaul radios (round dishes) mounted on the phone masts - They are much higher frequency and have to work on very precise alignments. They have pencil thin beams that come nowhere near the ground.
6) No study has found any link between Mobile Phones and radiation. Its just that they all tend to hedge their bets at the end as everyone is scared of giving an absolute go ahead.
7) And whilst I'm at it, if there was any possibility that using your phone on a plane was going to cause it to turn right, then you would not be allowed anywhere near an airport with one. The only reason you aren't allowed to use them on planes is because it would mess with the ground-software for handing over from cell to cell
8) And don't even get me started on using a phone on a garage forecourt. They're just scared that there may be some interference with the pumps and someone might get free petrol. Invisible spark, my eye.
9) Bit more subjective this, but I've spent the last twenty years working in RF and Microwave, and I'm fine. Honest. Just fine.....