We have done work specifically with schools to talk about that. But the challenge, in terms of research, is that when you isolate one factor like vending machines and you try to study whether taking vending machines out of schools or changing the content of vending machines has an impact, what you often see is a very small effect, because it's one of, as we say, 50 or 100 different factors. That doesn't mean we shouldn't try to make that school environment healthier, but it is challenging to have the evidence around that.
At this point in time I'm not aware of sufficient evidence to say just doing that is going to have a big impact on kids.