Just on health impact, my hope is that we're looking at evidence-based material here. There will be a tonne of anecdotal self-experience comments, which actually don't constitute the scientific research that would allow us to draw a conclusion about the impact on public health. It really is important that we find the most recent research on this, make sure that it has reasonable scientific merit and has used an evidence-based approach, and come to a conclusion fairly quickly as to whether there is an impact or not.
Again, I think it's important that we get the 2016 research, which I heard two months ago was quite compelling.