This is preventative medicine. That is the point, and this is what we found in Europe. I'll ask Dr. Rosengren to talk about the European experience and what the real impact there is. As you move away from preventative antibiotics, if you have to treat a sick bird you're going to use the antibiotics that are more important, and you're going to use more. That is the experience they've had in Europe.
Let me ask Dr. Rosengren to explain the result of that experiment in Denmark. We don't necessarily need to follow that lead; we need to follow a smart lead that we're doing in Canada right now with the government.