There is all kinds of research in the pipeline in North America and in Europe.
I think that in marketplaces where the e-cigarettes with nicotine are allowed, such as Britain and the United States, there is much more active research because it's easier to do.
Recognizing your earlier comments, the e-cigarette does provide a more efficient nicotine delivery system, and many consumers find it more satisfying than the patch. At the same time there are risks, and that's why regulation is needed. I think there is a general consensus of a need for regulation. There may be differences as to what regulation is best, although many recommendations seem to be coming up more and more.