Thanks very much, Mark, and certainly, I'm very interested in the issue of hepatitis C, which, of course, is a very long-term condition that many people have to live with. I'm very pleased to agree to take a look at whether there's any possibility of moving that target date. Clearly, the sooner we can eliminate this situation, the better, so I will undertake to have another look to see if there are any means of pulling that date forward.FootnoteLink