I have just a quick comment, because Cathy would like to join in.
We think there needs to be a joint approach. You need to control the environment for obesity as well as personal behaviour and personal responsibility, and in the environmental side there is a role for regulation, as in tobacco, where it worked well. You need regulation, you need taxation, and you need promotion programs.
In some cases, actually, the private sector prefers regulation, because there's a level playing field. Everybody has to play by the same rules. We actually support regulation in terms of marketing to kids. We think it's going to require regulation. Labelling, as well, should be done through regulation.
Cathy, you wanted to comment.