I agree with that, but what I was trying to establish was that it has been going on for 25 years, so I wondered if we had any hard data. I do appreciate the input there.
I'm struggling with this idea of cumulative risk and chronic exposure. Could you give us any comments on the idea of cumulative risk?
We've had people come in and say they can define these toxic substances down to a nanoparticle, which is extremely small. There could be an exposure to pens or to ink, if I stick a pen in my mouth or draw on my hands. Could you give us an idea on maybe dose versus risk and what you think about that comment? Does anybody have a comment on that?