No, I understand that. I'm wondering what kinds of studies you're looking at. Are you looking at the numbers of soldiers who were exposed to this, those who developed symptoms, those who didn't...?
I'm a physician, and I also did some medical research before medical school. We have levels of evidence that we get from the laboratory. We have levels of evidence when we look at the biochemistry of it. To make a trend to say “this drug does this”, of course we need large trials. What studies can you cite to give you this certainty that a soldier is much more likely to develop neuropsychiatric problems with this drug versus others?