Can I just make one comment in response? I don't know how much time I have, but I commend you for putting in place or developing this monitoring system, certainly with Canada being one of the countries, if not the country, with the highest incidence of MS. It's very important for us to do this.
Can you speak to the fact that this is going to be voluntary and to the implications it is going to have on our being able to have a robust data system?