I would just say that Health Canada has some research in this area, not a huge amount, but there's lots of research going on internationally in the area. And I think in terms of the long-term effects of cellphones, as you know, as Mr. Lord referred to, there was the Danish study, but the cohort included people who hadn't really used them all that long. There is value in having longer-term studies certainly, and I don't think anyone would deny that. Health Canada doesn't usually conduct those types of studies themselves.
As far as children are concerned, there have been a number of studies on children, and to date there's no evidence that children are any more at risk to this effect than others. That doesn't mean if people are concerned they shouldn't take the precautionary principle. Health Canada's written material states that: if parents are concerned, they can limit their children's cellphone use, if they can, and use hands-free devices and things.
I'd like to clarify another point that's been used. Health Canada's Safety Code 6 does look at non-thermal effects. It's a misconception that it only has set the limits based on thermal effects. In fact, as for the range of microwave energy in the electromagnetic spectrum, at the lower levels of that range it's nerve and muscle stimulation that is the end effect, acute effect, not thermal stimulation. And when we set those limits, we looked at all the literature available, the huge wealth of literature available on non-thermal effects also.