Yes. The two points that relate to that is whether they are less or equally toxic. We think they are less toxic—in some cases extremely less toxic and in some cases not so much. There is some variety across brands and within brands.
Secondly, in relation to whether in addition they can be an effective substitute to switch from smoking cigarettes or other combustible products to electronic cigarettes, we have concluded that the evidence right now doesn't allow us to reach a definite conclusion on that.