I do not have estimates right now, but yes we may talk about it as potentially a large problem. You said a large part of the population is exposed. Right now there are over seven billion cellphone users. If you can imagine, in Finland we have a total population of slightly over five million and we have over six million cellphone connections. Therefore, humanity is saturated with those devices, but at the same time we have to remember that we all are different, and therefore, we may respond differently to this radiation. Not every smoker gets lung cancer and this we have to consider also with exposure to cellphone radiation.
Therefore, those who are saying...they often show different kinds of blocks where there is a dramatic increase in the number of cellphones in the world and there is not much increase, if at all, in brain cancer. First of all, we are talking about the first 10 or 15 years of avid use in comparison with development of glioma for 40 years or 50 years. This is not yet indicating what will happen.
Another problem is that since not every smoker gets lung cancer, not every cellphone user will get brain cancer, if this radiation exposure will be finally proven to cause this. Therefore, it is not possible to expect that if we have a huge bump in cellphone numbers then we should expect a huge bump in brain cancers. It is not so.