It's important because it's not just the prenatal exposure, but if you bring a child home to a household where there's a lot of substance use, then you're exposing the child to a whole panoply of things that also have very negative effects. The women who use during pregnancy are also going to be the women who use after pregnancy, and they're going to be the most problematic users, who use other drugs, and are problematic in every way. You have to be aware of that when you're looking at data and when you're trying to intervene, because alcohol is not the only problem.