That's a little more straightforward than we would put it, because one of the things I make the point about in our papers is that it's not normal to pee out uranium, so that is an abnormal finding.
We have turned over pretty much every rock looking for big outcomes that might have been expected from a uranium exposure and we don't see them. Most of our patients' sequelae from exposure have to do with traumatic injury from being hit in these tanks and other vehicles.
We have done some other very, I'd guess you'd say, sophisticated testing that kind of goes to the next level of organ function. For example, in the kidney, we didn't see any abnormalities in the typical kidney measures that your doctor would get on you at an annual physical. We don't see any signals of abnormality there, but we're looking at the next level of detail to make sure we don't miss anything.